Frustrated with Coffee beans blank

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ALexG

ALexG

Member
Joined
Aug 17, 2010
Messages
192
Location
Stittsville, ON
Ok, I know that I should use a vacuum pot, which I don't have, but I've tried to do one of these blanks and had all the coffee beans floating on the PR, impossible to make them submerge evenly, I've been stirring the PR for about 5' before put them in, but it was still to liquid. Any advise, do I have to do any process to the beans before putting them in the PR?

I didn't take the block from the mold but I don't believe I will have any single usable piece for a blank, looks like a plastic Tiramisu, I'll post further.
BTW I found the library and these forums very useful, and It would be really nice to see a tutorial step by step on the process for casting any of these coffee beans, green beans or pasta blanks...

Thanks in advance
Alejandro
 
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I'm not the expert like some on here, but when I did one, I cast in layers. Took a while but it worked.
 
I've never used a vacuum when casting and have some pretty decent coffee bean blanks. Your solution is an easy one. Use enough beans to fill your mold, pour in the resin then put some sort of a lid on! Some use a heavy wire mesh, I use 1/8" pegboard just because I have a lot of it on hand. Placing the weighted pegboard or mesh on top keeps the beans from rising to the top of the mold. Whatever material you select just make sure air can escape and you don't trap the air inside the mold or you will have a problem.

If you need a real pro's answer, give elmostro a jingle or PM, he's made thousands of these and if I'm not mistaken, he's the one who told me how to do it.
 
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Fill your mold fully with coffee beans.
Heat your PR to make it thin as water consistency
Catalyze and pour your PR into the mold
Cover the beans with wax paper and an object to hold them down even with the top of the mold.

This will keep the beans in the mold and is sometimes messy so be ready! But....it works!

Good luck!

Fred
 
I cast coffee beans under pressure. No vacuum is required. Also, I place a piece of UHMW on top to keep the beans from floating out.
 
sbell111 said:
I cast coffee beans under pressure. No vacuum is required. Also, I place a piece of UHMW on top to keep the beans from floating out.
Click to expand...
Same here + I put a lead dive weight on top of the UHMW to really push them down.

Lin.
 
I cast mine in a pen shipping clear tube. Put pr in first and push the beans in till the tube is full of beans and the pr is at the top covering all of them . Most of the time they fit in tight enuff that they dont want to flote out , if needed a peace of tape across the top to hold them down. So many ways to do the same thing.
 
today's update : well from my Tiramisu brick, I've got potential blanks for 3 pens, I've drilled them and painted both tubes and blank inside with white acrylic, since I can see the PR is a little bit translucent and I've read about using dyed epoxy for gluing as well.
Any advise for the turning? mainly for the beans so they don't shatter in pieces?
Thanks for the quick responses from yesterday
 
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