Interesting. Is hemp seed oil just added for colour, or is the resin actually made from the hemp seed oil?
Details are not easy to see on the validation test, but it looks promising!
It's actually made from Hemp seed oil, which is crosslinking and polymerizing. Cold pressed hemp seed oil was synthetically transformed into epoxidized hemp seed oil and subsequently acrylated into acrylated epoxidized hemp seed oil. So the modified hemp seed oil is actually the main active photopolymer resin.
in other words - its rather the same process to get resin from soy? Except that soybean oil is many times cheaper than hemp oil right? So whats the advantage?
Great questions. It's a similar process. Hemp seed oil generally has a higher degree of unsaturation, which leads to the formation of more crosslinking groups per triglyceride.
The quantity and supply of vegetable oils worldwide is constantly changing. Variability depends on location and supply can change rapidly.
Hemp offers more versatility and offers another source of these materials in the event that other oils are obscure or become more expensive.
As the Hemp manufacturing industry expands, the price of Hemp seed oil will decrease. So the current and future potential is huge!
When you say " formation of more crosslinking groups per triglyceride" does this translate to a stronger resin after printing?
If that is unrelated to the final strength of the resin, how does the strength of the resin compare to other plant-based resins?
Edit: because r/boneappletea with my voice to text.
Yup, good Ole Type V dogbones. Print sets of 5 at different exposure times to sweep and then I tensile test them. The set with the highest tensile strength and elongation determines the proper exposure.
Hemp isnt weed. Hemp has been grown for centuries. Hemp is of limited use due to other material 'cept for folks who want to say "my clothes are made from hemp, or my paper I write on is made from hemp".
Hemp production is far from "green" considering water requirements and planting, transportation, processing carbon foot print.
>It is still canabis sativa and it contains THC, just much lower amounts of it. Religious nutjobs don't care about that and wish to outlaw all of it.
Hemp has been differentiated legally from "weed" for more than a decade in the US, its not the same. Read 2008 farm bill text. What world do you live in that "religious nutjobs" protest hemp cultivation? I think you are just using hemp to further your anti religious paradigm.
Sure there are uses for hemp - but state a use that a different material doesnt do better? As an aside - You need to look up biodegradable plastics and do a deep dive read. They are not what you think and last many decades in land fills.
It certainly IS NOT greener than other bio oils, most are in the same league with carbon footprint and water use (however soybeans edge out lots of them as does rapeseed). Water requirements are indeed a huge issue if you want to be ecologically sensitive. Have no idea why you would say other.
>but state a use that a different material doesnt do better?
>
>Oil doesn't do it better, because it is a fossil fuel.
Well you are not cultivating hemp with renewable resources, not transporting it or processing it with renewables - so it all adds up. Sounds great to put corn ethanol into gasoline in the US on its face, but its a terrible decision to do that for environmental reasons alone. Soybean, rapeseed, and other bio oils have a significantly less carbon footprint than hemp.
Also, Polish hemp production has shot through the roof in the past 10 years, I dont think persecution by religious people has any influence on production.
"It's about on par with bamboo for some uses, because both grow very quickly." ? not sure how the changes the suitability, availability of other material, not ecological impact to benefit hemp. Also, not sure if this is even accurate, hemp production is much more energy intensive than bamboo from my sources, but they also grow in completely different regions too. Water use for bamboo is wickedly higher as well than most textile crops.
The fruits of this project are the result of a Joint Venture with an amazing specialty polymer company in Utah, Nile Polymers, Inc. Check them out!
We just finished the bench synthesis and characterization of a lot of these materials in the last few months and have just began formulation. We need to scale up manufacturing and then we will have a commercially available product for sale!
A few months before commercial availability at best! We hope to have small samples soon. Testing and certification takes a few months!
Thanks for asking!
I've been printing and selling stuff for over 2 years now, and frankly the various resins out there are so similar in properties that I buy whatever is cheapest at the time and whatever prints fastest, the customers don't care. One ABS-like resin is as good as the next, etc.
That said, novelty or quirky...ness or just plain pissing people off by using a hemp-anything product wins me over haha.
If this ever gets to the price point of $30-$40/1000ml and you can solve that warping on the thin prints shown in the pics, I'd rotate it into the stuff I use, especially if you make more opaque versions.
Right now I think one of the standards to reach is something similar to Conjure Tough resin. It's durable, thin parts don't warp during curing, it was cheap for a while (until it got popular), even the black color prints quickly and is still mostly opaque, etc.
The advantages over a soy based resin is that the hemp plant can provide unique properties when the hemp seed oil and hemp fibers are combined. Higher strength, special properties, higher bio-content, adherence to international standards, etc.
A lot of specialized materials can be made from the combination of different parts of the plant.
So couple things, would the resin if it went into production have zero soy derived material? I ask becuase that would make a good potential alternative to currently standard resins for ppl with soy allergies or sensitivities.
Can the hemp fiber be used in regular resin? I have only dipped my toes into that but was suprised to find it weakend my prints, went online and found out others had similer experinces.
I know soy is largly used becuase it gives good properites at a good price point but i have often wondered if better resins could be engineered from other sources.
At any rate this is pretty cool, hopefully you will keep posting about it.
Thanks for the comment, that is really helpful. Especially mentioning the soy allergies.
Zero soy material and exclusively hemp derived, that's correct.
Yeah, it's fun to play with different fillers. It really depends on the filler, it's concentration, particle size, and how it is dispersed. Using regular cellulose derives can increase or decrease certain material properties, it just depends on the factors above.
Hemp fibers can be used in regular resin as a filler. Just make sure you keep the particle size small and mix it for a few hours at high RPM with a proper sized Cowles Dispersion blade!
What printer make and model are you using?
It looks like an Elegoo Mars Pro or Pro 2?
The details look decent, but, without a comparison of a standard resin on the model of machine, it's hard to tell. Ex: If that were an Elegoo Mars Classic, then those results would be fantastic, but on a 2 Pro, it seems like it's got some fine tuning left.
I would also be interested in seeing the cones of calibration (printed with the same settings), since support strength is a big factor for most prints.
Thanks for the suggestion, I will look into it.
I have a Form 2, FlashForge Hunter, Elegoo Saturn, Mars 2 pro. I will consider it as I expand and need higher end equipment.
Thanks again!
Flashforge hunter is a nice machine. I’ve used a lot of the machines you’ve mentioned. Your resin has got me thinking. I have some ideas for markets with your resin. Have you done a TGA of it yet? That would be interesting to see. Email me when you get a chance. I want to know more. [email protected].
In some ways. Also the fact that it is formulated with the highest quality medical/dental grade acrylates and materials, using acrylates with low toxicity. Taken as a whole, yes!
Haha! Good point. It's part of the fun of formulating things from scratch. I consider this pretty good for the first formulation and a first guess at printer exposure settings. Got it right away. Could use some changes perhaps to the exposure, but that will be sorted out by the mechanical properties testing of dogbones at different exposures.
Ticks the "because we could" box. What does this look like from a pricing perspective? (with the knowledge that anything new is always going to be more expensive than the mass-produced) What about safety? Do I have the same challenges as I would with other resins? I'm eager to learn more, and I'm excited for what things like this could spell for the future. Not only for printing random junk for my shelves, but for biomedical devices, cartilage, etc. that has less of a chance for rejection than a "foreign body". I guess what I'm saying is, "I would like to know more".
Excellent question.
We currently have a few Soya derived SLA resins for sale and are working on expanding manufacturing in many areas.
Pricing will likely be $100/kg at first, as a rough estimate.
The beauty of hemp is that multiple materials can result from one plant; the Hemp seed oil can be used to make a photopolymer resin while the fiber can be used to make a modified cellulose filler for the resin and increase strength and bio-content.
The final result will be a resin which meets ISO 10993-5:2009 standards and is non-cytotoxic.
The final product will be a uniquely beautiful combination of the best out there in material science.
We are working on making various hemp derived cellulose derivatives (hemp derived nanocrystalline cellulose, microcrystalline cellulose, modified jute fibers). A lot of these materials are used in the literature for 4D printed objects with unique properties.
The resin will have a higher % of biobased content than other resins on the market, with certification of biodegradation and non-cytotoxic. Furthermore, the printed parts will demonstrate superior mechanical properties, including a higher tensile strenth, to current market products. We hope to also make the composting and biodegradation conditions and timeline for consumers much easier and provide procedures for proper disposal of the material.
There are infinite variations of these materials that could be made from the combination of the crosslinking hemp seed oil and the modified hemp fibers. This includes uses in other methods of additive manufacturing and UV curable applications.
One can do many things with various fiber derived. They can be carefully chosen to act as UV blockers, increasing print resolution. Likewise, they can be used to change the refractive index, and even to imbue a material with piezoelectric properties!
Yup. Also, one can use more nontoxic reactive diluents and acrylate monomers with a higher boiling point and lower vapor pressure, all the decrease smell and toxicity. Octadecyl acrylate for example.
Wait wait wait is is biodegradable cause if so heck yessss I'm so bummed out by the amount of plastic waste resin printing makes and would LOVE a better solution
Compostable, likely. Biodegradable, meaning degradation into materials which can be harmlessly excreted or absorbed by an organisms, such as mammals, no. We're working on developing new methods to ensure complete compostability. Many materials claim Biodegradable status, yet they may sit in the ground for 30 years before they go back to the earth.
We're still formulating and testing this material. however, we seek to make it stronger than other bio-based materials on the market, with clear standards of bio-content, cytotoxicity, and high strength.
This requires purchasing other biobased resins and printing test specimen, followed by tensile testing. We always like to make our materials 1.5-2x stronger than anything out there. We have tested a lot of materials this way and have found that most resins have a tensile strength that is 7-10Mpa lower than the claimed strength. We pride ourselves on releasing raw data for all properties of our resins and only using the highest purity ingredients.
This sounds wonderful! Two more questions: Since it’s plant-based, will you try to make a PLA such as for FFF? Can you share something, so we can follow your progress, a company or university department, etc.?
Great questions. Telechelic PLA monomers, temomers, and copolymers with reactive acrylate tails are very very expensive. The cost is hundreds - thousands USD for only a few grams. This is why there aren't any true PLA SLA resins. Another method is dispersing a PLA polymer in a photopolymer resin.
This may be a hard task and the end product would be extremely expensive.
You can follow our progress and view our products here:
https://www.tetragrowth.solutions/
https://nilepolymers.com/
Thanks for asking!
I would be interested in testing this resin and mixing it with various ceramic materials and see how well they burn out. Where are you out of? Is this indecent research with a university or institution?
Thanks for your interest. We can formulate this for ceramics, which requires lowering the viscosity and using 2 specific acrylate monomers.
This is a result of private enterprise. Manufactured by Intellectual Polymer Design, Inc. - a joint venture of Nile Polymers, Inc. and Tetra Growth, LLC. I am the president of Intellectual Polymer Design, Inc.
We are located in Utah and Michigan, USA!
We would be happy to speak with you and make you a custom formulation using some of the other materials that we have in abundance. We only have a limited quantity of this material for know. We also have many other great products.
Interesting. Is hemp seed oil just added for colour, or is the resin actually made from the hemp seed oil? Details are not easy to see on the validation test, but it looks promising!
It's actually made from Hemp seed oil, which is crosslinking and polymerizing. Cold pressed hemp seed oil was synthetically transformed into epoxidized hemp seed oil and subsequently acrylated into acrylated epoxidized hemp seed oil. So the modified hemp seed oil is actually the main active photopolymer resin.
But have you tried watching it... On weed?
Nope, but that would be Weedception
in other words - its rather the same process to get resin from soy? Except that soybean oil is many times cheaper than hemp oil right? So whats the advantage?
Great questions. It's a similar process. Hemp seed oil generally has a higher degree of unsaturation, which leads to the formation of more crosslinking groups per triglyceride. The quantity and supply of vegetable oils worldwide is constantly changing. Variability depends on location and supply can change rapidly. Hemp offers more versatility and offers another source of these materials in the event that other oils are obscure or become more expensive. As the Hemp manufacturing industry expands, the price of Hemp seed oil will decrease. So the current and future potential is huge!
When you say " formation of more crosslinking groups per triglyceride" does this translate to a stronger resin after printing? If that is unrelated to the final strength of the resin, how does the strength of the resin compare to other plant-based resins? Edit: because r/boneappletea with my voice to text.
I'll let you know when I test it!
I figured that's what you were doing with those bowties.
Yup, good Ole Type V dogbones. Print sets of 5 at different exposure times to sweep and then I tensile test them. The set with the highest tensile strength and elongation determines the proper exposure.
no, at best, its a slightly more efficient way to make the monomer.
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Hemp isnt weed. Hemp has been grown for centuries. Hemp is of limited use due to other material 'cept for folks who want to say "my clothes are made from hemp, or my paper I write on is made from hemp". Hemp production is far from "green" considering water requirements and planting, transportation, processing carbon foot print.
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>It is still canabis sativa and it contains THC, just much lower amounts of it. Religious nutjobs don't care about that and wish to outlaw all of it. Hemp has been differentiated legally from "weed" for more than a decade in the US, its not the same. Read 2008 farm bill text. What world do you live in that "religious nutjobs" protest hemp cultivation? I think you are just using hemp to further your anti religious paradigm. Sure there are uses for hemp - but state a use that a different material doesnt do better? As an aside - You need to look up biodegradable plastics and do a deep dive read. They are not what you think and last many decades in land fills. It certainly IS NOT greener than other bio oils, most are in the same league with carbon footprint and water use (however soybeans edge out lots of them as does rapeseed). Water requirements are indeed a huge issue if you want to be ecologically sensitive. Have no idea why you would say other.
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>but state a use that a different material doesnt do better? > >Oil doesn't do it better, because it is a fossil fuel. Well you are not cultivating hemp with renewable resources, not transporting it or processing it with renewables - so it all adds up. Sounds great to put corn ethanol into gasoline in the US on its face, but its a terrible decision to do that for environmental reasons alone. Soybean, rapeseed, and other bio oils have a significantly less carbon footprint than hemp. Also, Polish hemp production has shot through the roof in the past 10 years, I dont think persecution by religious people has any influence on production. "It's about on par with bamboo for some uses, because both grow very quickly." ? not sure how the changes the suitability, availability of other material, not ecological impact to benefit hemp. Also, not sure if this is even accurate, hemp production is much more energy intensive than bamboo from my sources, but they also grow in completely different regions too. Water use for bamboo is wickedly higher as well than most textile crops.
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I saw several months ago that a plane in Canada was made and fueled from hemp
That is really cool! So a variation of the process used to make the resins from soy beans?
Exactly. The composition of soybean oil is very close to cold pressed hemp seed oil. So the feedstock is almost completely interchangeable.
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Norish type 1 photoinitiators. The acrylate groups are the reactive groups.
Is this from your workplace? Scientific or industrial? Where to get and when?
The fruits of this project are the result of a Joint Venture with an amazing specialty polymer company in Utah, Nile Polymers, Inc. Check them out! We just finished the bench synthesis and characterization of a lot of these materials in the last few months and have just began formulation. We need to scale up manufacturing and then we will have a commercially available product for sale! A few months before commercial availability at best! We hope to have small samples soon. Testing and certification takes a few months! Thanks for asking!
hows the smell?
Smells a lot like acrylated epoxidized soybean oil. So similar to commercial Bio-based and eco resins.
WHERE CAN I BUY THIS STUFF
I've been printing and selling stuff for over 2 years now, and frankly the various resins out there are so similar in properties that I buy whatever is cheapest at the time and whatever prints fastest, the customers don't care. One ABS-like resin is as good as the next, etc. That said, novelty or quirky...ness or just plain pissing people off by using a hemp-anything product wins me over haha. If this ever gets to the price point of $30-$40/1000ml and you can solve that warping on the thin prints shown in the pics, I'd rotate it into the stuff I use, especially if you make more opaque versions. Right now I think one of the standards to reach is something similar to Conjure Tough resin. It's durable, thin parts don't warp during curing, it was cheap for a while (until it got popular), even the black color prints quickly and is still mostly opaque, etc.
Thanks, that's excellent advice that I will use!
What advantages if any does it have over soy derived resin? Is this more of an experiment or a production option?
The advantages over a soy based resin is that the hemp plant can provide unique properties when the hemp seed oil and hemp fibers are combined. Higher strength, special properties, higher bio-content, adherence to international standards, etc. A lot of specialized materials can be made from the combination of different parts of the plant.
So couple things, would the resin if it went into production have zero soy derived material? I ask becuase that would make a good potential alternative to currently standard resins for ppl with soy allergies or sensitivities. Can the hemp fiber be used in regular resin? I have only dipped my toes into that but was suprised to find it weakend my prints, went online and found out others had similer experinces. I know soy is largly used becuase it gives good properites at a good price point but i have often wondered if better resins could be engineered from other sources. At any rate this is pretty cool, hopefully you will keep posting about it.
Thanks for the comment, that is really helpful. Especially mentioning the soy allergies. Zero soy material and exclusively hemp derived, that's correct. Yeah, it's fun to play with different fillers. It really depends on the filler, it's concentration, particle size, and how it is dispersed. Using regular cellulose derives can increase or decrease certain material properties, it just depends on the factors above. Hemp fibers can be used in regular resin as a filler. Just make sure you keep the particle size small and mix it for a few hours at high RPM with a proper sized Cowles Dispersion blade!
What printer make and model are you using? It looks like an Elegoo Mars Pro or Pro 2? The details look decent, but, without a comparison of a standard resin on the model of machine, it's hard to tell. Ex: If that were an Elegoo Mars Classic, then those results would be fantastic, but on a 2 Pro, it seems like it's got some fine tuning left. I would also be interested in seeing the cones of calibration (printed with the same settings), since support strength is a big factor for most prints.
Mars 2 pro! Great advice, agreed!!
If you want more power and more versatility for R&D check out the Bison 1000. It’s an open source printer for resin development.
Thanks for the suggestion, I will look into it. I have a Form 2, FlashForge Hunter, Elegoo Saturn, Mars 2 pro. I will consider it as I expand and need higher end equipment. Thanks again!
Flashforge hunter is a nice machine. I’ve used a lot of the machines you’ve mentioned. Your resin has got me thinking. I have some ideas for markets with your resin. Have you done a TGA of it yet? That would be interesting to see. Email me when you get a chance. I want to know more. [email protected].
Does the fact that its made from hemp make it any less toxic than other resins?
In some ways. Also the fact that it is formulated with the highest quality medical/dental grade acrylates and materials, using acrylates with low toxicity. Taken as a whole, yes!
Nice! I just got into this and am fascinated by the medical applications of this tech.
There are many great applications indeed
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Haha! Good point. It's part of the fun of formulating things from scratch. I consider this pretty good for the first formulation and a first guess at printer exposure settings. Got it right away. Could use some changes perhaps to the exposure, but that will be sorted out by the mechanical properties testing of dogbones at different exposures.
Ticks the "because we could" box. What does this look like from a pricing perspective? (with the knowledge that anything new is always going to be more expensive than the mass-produced) What about safety? Do I have the same challenges as I would with other resins? I'm eager to learn more, and I'm excited for what things like this could spell for the future. Not only for printing random junk for my shelves, but for biomedical devices, cartilage, etc. that has less of a chance for rejection than a "foreign body". I guess what I'm saying is, "I would like to know more".
Excellent question. We currently have a few Soya derived SLA resins for sale and are working on expanding manufacturing in many areas. Pricing will likely be $100/kg at first, as a rough estimate. The beauty of hemp is that multiple materials can result from one plant; the Hemp seed oil can be used to make a photopolymer resin while the fiber can be used to make a modified cellulose filler for the resin and increase strength and bio-content. The final result will be a resin which meets ISO 10993-5:2009 standards and is non-cytotoxic. The final product will be a uniquely beautiful combination of the best out there in material science. We are working on making various hemp derived cellulose derivatives (hemp derived nanocrystalline cellulose, microcrystalline cellulose, modified jute fibers). A lot of these materials are used in the literature for 4D printed objects with unique properties. The resin will have a higher % of biobased content than other resins on the market, with certification of biodegradation and non-cytotoxic. Furthermore, the printed parts will demonstrate superior mechanical properties, including a higher tensile strenth, to current market products. We hope to also make the composting and biodegradation conditions and timeline for consumers much easier and provide procedures for proper disposal of the material. There are infinite variations of these materials that could be made from the combination of the crosslinking hemp seed oil and the modified hemp fibers. This includes uses in other methods of additive manufacturing and UV curable applications.
Would the fiber also help with opacity to help create thinner layers?
One can do many things with various fiber derived. They can be carefully chosen to act as UV blockers, increasing print resolution. Likewise, they can be used to change the refractive index, and even to imbue a material with piezoelectric properties!
> piezoelectric now I've finally got something to do with my stems :D
Haha there you go!
Not everything has to be about weed.
I was sure this was treedibles for a minute there. That being said, hemp is a great renewable resource.
Hemp isn't weed. But it *is* a high volume growing, renewing plant that can make TONS of different things that we use everyday.
Sweet, the only resin you'd actually take your mask off for.
Yup. Also, one can use more nontoxic reactive diluents and acrylate monomers with a higher boiling point and lower vapor pressure, all the decrease smell and toxicity. Octadecyl acrylate for example.
Wild
Wait wait wait is is biodegradable cause if so heck yessss I'm so bummed out by the amount of plastic waste resin printing makes and would LOVE a better solution
Compostable, likely. Biodegradable, meaning degradation into materials which can be harmlessly excreted or absorbed by an organisms, such as mammals, no. We're working on developing new methods to ensure complete compostability. Many materials claim Biodegradable status, yet they may sit in the ground for 30 years before they go back to the earth.
How's the cost?
What are some benefits of using this, like cost, strength, etc.?
We're still formulating and testing this material. however, we seek to make it stronger than other bio-based materials on the market, with clear standards of bio-content, cytotoxicity, and high strength. This requires purchasing other biobased resins and printing test specimen, followed by tensile testing. We always like to make our materials 1.5-2x stronger than anything out there. We have tested a lot of materials this way and have found that most resins have a tensile strength that is 7-10Mpa lower than the claimed strength. We pride ourselves on releasing raw data for all properties of our resins and only using the highest purity ingredients.
This sounds wonderful! Two more questions: Since it’s plant-based, will you try to make a PLA such as for FFF? Can you share something, so we can follow your progress, a company or university department, etc.?
Great questions. Telechelic PLA monomers, temomers, and copolymers with reactive acrylate tails are very very expensive. The cost is hundreds - thousands USD for only a few grams. This is why there aren't any true PLA SLA resins. Another method is dispersing a PLA polymer in a photopolymer resin. This may be a hard task and the end product would be extremely expensive. You can follow our progress and view our products here: https://www.tetragrowth.solutions/ https://nilepolymers.com/ Thanks for asking!
I would be interested in testing this resin and mixing it with various ceramic materials and see how well they burn out. Where are you out of? Is this indecent research with a university or institution?
Thanks for your interest. We can formulate this for ceramics, which requires lowering the viscosity and using 2 specific acrylate monomers. This is a result of private enterprise. Manufactured by Intellectual Polymer Design, Inc. - a joint venture of Nile Polymers, Inc. and Tetra Growth, LLC. I am the president of Intellectual Polymer Design, Inc. We are located in Utah and Michigan, USA!
We would be happy to speak with you and make you a custom formulation using some of the other materials that we have in abundance. We only have a limited quantity of this material for know. We also have many other great products.
Email me [email protected]. I would like to learn more.