I think this is the best resin tutorial I have seen to date. Simple, on point, complete, understandable...especially for those of us who have a confrontational relationship with math. ;) Thank you.
I usually fill my moulds with water to see how much resin it will take, but now I'll be doing the rice test . That totally cuts out the hastle of drying the mould and stuff - so thank you for that tip - very helpful.💜
Water does work too, but like you said... it takes extra time. I'm too impatient for that! LOL Plus, I don't like to have water anywhere near my resin, so the rice is a life saver!
I think you know more than I about those ratios =D Alumilite has the formulas written out with an explanation about how it works on the page I linked to in the description. It will probably help out more than I could have
Based on volume, the air spaces between the rice grains detract from the accuracy. Wouldn't sand or table salt., or sugar be a bit closer in accuracy ? For that matter, why not use water or corn syrup? Just askin' Zak.✌
Wouldn't a liquid like water give you a better measurement? There is a lot of air space that is not accounted for with the rice. I think, not sure which is why I am asking! 😁
It may, but it's also a pain to clean up, and you don't want to have any moisture in the mold when you go to cast it. I find rice to be plenty accurate and much quicker/cleaner. Just add a little extra resin, and you'll be good to go =D
Ohhhh nvm disregard previous reply on other comment - so u can use water you just have to dry it really well- again after vermicelli is all over the table lmao 🤣 🤣 🤣
Hi Zac, more great tips Thank you. I have a question. If I am pressure casting components in resin, does the silicone mold that I am using need to be made under pressure during its curing.
Hey Rodger, glad that it was helpful. No, you don't need to make the silicone mold under pressure, but you do need to make sure there are no air bubbles in it, so vacuum degassing and pouring the silicone carefully are musts to ensure the mold doesn't deform when any air bubbles collapse under pressure. Great question! =D
I like to estimate on my first cast and then weigh the casted piece after it cures to know exactly how much resin to use next time. Might waste a little at first.
Rice method didn't work for me, I was still coming up way short on resin and had to mix more. I guess it's because my molds are unusual shaped and detailed, so the rice couldn't fill all of it.
You need to use a solvent like acetone or denatured alcohol, I don't think soap and water would work and probably not the best thing to pour down the sink anyway. Best way to go is just wait til it sets up then peel it out, you'll want to use a non stick cup, like paint mixing cups, for that method
You could do that, it will also tell you if a mold has leaks in it. I'd rather not have to worry about getting all the water out though, resin hates water so I keep it far away from it
I don't unfortunately :( Maybe check with Jake Thompson, he might be selling them. Leave him a response above or head to his channel: th-cam.com/channels/wbwXJk-BPA-052jig9gmpw.html
Only thing is that is better to write the amount in a note book rather than the mold. I did it with my molds and even the sharpie got erased from silicone mold.
@@ritalinjunkies So glad I could give you something new to try out. It's funny, I've been casting for a while, and I learn something new all the time and think... "Why didn't I think of that years ago!!" LOL =D
You need to know the conversion factor to take it from cubic inches to ounces. That works fine for simple geometric shapes, but it's really not going to help much on super odd shaped things that are complex. It's much faster and easier just to use rice or something similar for those, and you can just use an online resin calculator for rectangles or cylinders if you don't want to memorize the formulas. If you really love math, Alumilite's volume calculator page explains the math
You have to make sure to dry it out completely or it will cause curing issues, especially with urethane resins like Alumilite Clear, which I use for most everything I make. It will work if you want to use it, but I think most people will find that something like rice works a lot faster and easier. I only recommend things that I would actually do, but that doesn't mean it's the only, or best, choice for you. I also don't have a water source in my part of the shop, so it's more of a hassle just to get water in the first place, I can keep a bag of rice handy and reuse it over and over again.
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I think this is the best resin tutorial I have seen to date. Simple, on point, complete, understandable...especially for those of us who have a confrontational relationship with math. ;) Thank you.
Thank you! Super helpful; I've just started with resin and I don't want to waste resin figuring all my moulds out!
Good stuff... I get people asking me all the time.. why do I have a container full of rice.. lol good tips 👍👍
LOL Just tell them spontaneous stirfry happens!! 😆
😂🤣😂🤣 Now I’m hungry. Thanks, Zac.
This really helps with creating silicone molds and then the actual resin mold. Good stuff Doc.
Awesome!! Glad it will be helpful =D
I usually fill my moulds with water to see how much resin it will take, but now I'll be doing the rice test . That totally cuts out the hastle of drying the mould and stuff - so thank you for that tip - very helpful.💜
Water does work too, but like you said... it takes extra time. I'm too impatient for that! LOL Plus, I don't like to have water anywhere near my resin, so the rice is a life saver!
Thanks, Zac, you are always so helpful. I will remember that rice trick. 👍🏻
My pleasure =D
Great advice! I wanted you to get into the math though pi R squared and all that! Thanks Zac!
I think you know more than I about those ratios =D Alumilite has the formulas written out with an explanation about how it works on the page I linked to in the description. It will probably help out more than I could have
I needed to learn how to do this, that helped me. Thank you for sharing.
My pleasure! Glad it was helpful =D
I only use water, its accurate. Rice, sand, salt etc can leave tiny bits in the mold necessitating washing the mold anyway.
I use water too. Resin is thicker, but it gives you a good estimate anyway.
Ahhhh. Boy, that helps a lot. Thanks so much. I am subscribing now.
AWESOM TIPS ZAC. ALLWAYS A PLESURE WATCHING YOU FROM DOUG
Thanks brother!! 👊
Tried ‘em both, but I prefer water.
Please answer this question. How do you exactly match color when you have To pour in stages like for deep pours.
Based on volume, the air spaces between the rice grains detract from the accuracy. Wouldn't sand or table salt., or sugar be a bit closer in accuracy ? For that matter, why not use water or corn syrup? Just askin' Zak.✌
You can use any of those if you like, but the smaller the material, the harder it is to get it all out. Rice is accurate enough for me
Ball parkin' it has worked well for me too! 😃
Why can’t you use water and of course I read this after I just filled my mold with rice and vermicelli- lol
Hi Zac, Fantastic tips once again. Especially the link to Alumilite's calculator as I didn't know it existed.. Take care Zac. Cheers, Huw.
Awesome! Glad it was helpful =D
This is so useful
Wouldn't a liquid like water give you a better measurement? There is a lot of air space that is not accounted for with the rice. I think, not sure which is why I am asking! 😁
It may, but it's also a pain to clean up, and you don't want to have any moisture in the mold when you go to cast it. I find rice to be plenty accurate and much quicker/cleaner. Just add a little extra resin, and you'll be good to go =D
Ohhhh nvm disregard previous reply on other comment - so u can use water you just have to dry it really well- again after vermicelli is all over the table lmao 🤣 🤣 🤣
I use water when I first buy it, make a list and the crying factor doesn't matter.
I'm a beginner. Can I use the rice method with any mold?
Thank You for sharing this
Wow I can’t believe I hadn’t thought of that! Ahaha nice!
This is the best tip
Hi Zac, more great tips Thank you. I have a question. If I am pressure casting components in resin, does the silicone mold that I am using need to be made under pressure during its curing.
Hey Rodger, glad that it was helpful. No, you don't need to make the silicone mold under pressure, but you do need to make sure there are no air bubbles in it, so vacuum degassing and pouring the silicone carefully are musts to ensure the mold doesn't deform when any air bubbles collapse under pressure. Great question! =D
Wound up with starch dust from the rice on every nook and cranny of my nice unused silicone mold. That was frustrating.
Amazing!!! Thank you!
Hi Zac, I am struggling to find an epoxy resin over 90D, any options?
I'm not aware of any off hand that are 90D
Good stuff dude
Thank You
Excellent Thank you
I like to estimate on my first cast and then weigh the casted piece after it cures to know exactly how much resin to use next time. Might waste a little at first.
That's a great idea!!
How about water instead of rice, well it work?
Rice method didn't work for me, I was still coming up way short on resin and had to mix more. I guess it's because my molds are unusual shaped and detailed, so the rice couldn't fill all of it.
Would using water work as well?
The 'weight' part is a little confusing. Do you weigh the rice, and that equals the rough weight of total resin ?
This might be a silly question, but if you want to re-use cups for resin mixing, is it safe to wash it on the sink with just soap and water?
You need to use a solvent like acetone or denatured alcohol, I don't think soap and water would work and probably not the best thing to pour down the sink anyway. Best way to go is just wait til it sets up then peel it out, you'll want to use a non stick cup, like paint mixing cups, for that method
Nice Resin Trick 👍🏻
Good info... thanks
Thanks David! =D
Sound Advice Brother!
Thanks Steve =D
So, is the reason you don't just use water because then you'd need to let the mold dry?
Yeah, I wouldn't want to mess with water personally. Water and resin don't mix, and I wouldn't want to have to wait to use it
Im curious about the answer, because thats my question too :D
Great info.
Thank you better idea than using water .
What do I do if the ratio is 3 to 1?
why not fill with water and dump in measuring cup??
liquid measurement try water in the mold instead of rice
You could do that, it will also tell you if a mold has leaks in it. I'd rather not have to worry about getting all the water out though, resin hates water so I keep it far away from it
Do you know of anyone selling burr molds ???
I don't unfortunately :( Maybe check with Jake Thompson, he might be selling them. Leave him a response above or head to his channel: th-cam.com/channels/wbwXJk-BPA-052jig9gmpw.html
I fill my mould with water and weigh it as I use glasscast 10 it’s by weight
Only thing is that is better to write the amount in a note book rather than the mold. I did it with my molds and even the sharpie got erased from silicone mold.
Yeah, I thought about that too. It is best to do both for sure =D
I've been casting for years, and never thought of using rice or sand to measure volume. Brilliant stuff dude. Thanks from sunny cape town
@@ritalinjunkies So glad I could give you something new to try out. It's funny, I've been casting for a while, and I learn something new all the time and think... "Why didn't I think of that years ago!!" LOL =D
Can’t you just calculate the volume using basic geometry?
You need to know the conversion factor to take it from cubic inches to ounces. That works fine for simple geometric shapes, but it's really not going to help much on super odd shaped things that are complex. It's much faster and easier just to use rice or something similar for those, and you can just use an online resin calculator for rectangles or cylinders if you don't want to memorize the formulas. If you really love math, Alumilite's volume calculator page explains the math
Why not just use water instead of rice?
You have to make sure to dry it out completely or it will cause curing issues, especially with urethane resins like Alumilite Clear, which I use for most everything I make. It will work if you want to use it, but I think most people will find that something like rice works a lot faster and easier. I only recommend things that I would actually do, but that doesn't mean it's the only, or best, choice for you. I also don't have a water source in my part of the shop, so it's more of a hassle just to get water in the first place, I can keep a bag of rice handy and reuse it over and over again.
Can I use water or is bad to wet the mould?