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914World.com _ 914World Garage _ OT Epoxy Resin cars
Posted by: Unobtanium-inc Jan 14 2021, 07:05 PM
Me and the kids decided to start playing with Epoxy Resin. Avi made little tea cups, I made Porsches!
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Posted by: Mikey914 Jan 14 2021, 08:06 PM
Silicone works much better. It's how we started making parts. Very time consuming but fun.
Posted by: Unobtanium-inc Jan 14 2021, 08:28 PM
Silicone works much better. It's how we started making parts. Very time consuming but fun.
I made the mold with silicone, man was it stinky!
Posted by: 73-914 Jan 14 2021, 09:03 PM
Dow RTV gr8 stuff
Posted by: Tdskip Jan 14 2021, 10:04 PM
Very cool
Posted by: jrblackbox Jan 15 2021, 10:20 AM
Me and the kids decided to start playing with Epoxy Resin. Avi made little tea cups, I made Porsches!
What no 914??
Posted by: Mikey914 Jan 15 2021, 10:27 AM
Undercut on the windshield with top off was to much 
Posted by: Unobtanium-inc Jan 15 2021, 11:03 AM
Me and the kids decided to start playing with Epoxy Resin. Avi made little tea cups, I made Porsches!
What no 914??
Next round, it's so easy I'll be doing a bunch.
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Posted by: Unobtanium-inc Jan 16 2021, 03:06 PM
Ok, so after polishing and clear coating, this is where we are. I'm trying some more refinements, but overall it's fun!
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Posted by: VaccaRabite Jan 17 2021, 04:14 PM
You need to rig up a vacuum chamber or a pressure pot to out gas all those bubbles.
Zach
Posted by: Unobtanium-inc Jan 17 2021, 08:25 PM
Tried to do black resin, worked out ok, but I kind of like the clear better. Might experiment with lite tinting, rather than solid colors.
Also, ran out of resin, so ordered 2 gallons, it's gonna be a long winter.
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Posted by: Spoke Jan 17 2021, 08:39 PM
Looks good. I like both the clear and the black. I'll take a 930 in clear if you're selling any...
Posted by: Unobtanium-inc Jan 19 2021, 08:09 PM
Ok, made a new mold tonight and yes there is a 914 in there!
Hoping to do all these this weekend, check back for updates.
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Posted by: infraredcalvin Jan 20 2021, 08:34 PM
Can you make some ice cube trays out of those? That would be slick!
Posted by: flat4guy Jan 20 2021, 09:33 PM
Looks like fun - how heavy are they? I wish we had winter in Calif - I was doing yard work in a T shirt today.
Posted by: Unobtanium-inc Jan 20 2021, 10:46 PM
Looks like fun - how heavy are they? I wish we had winter in Calif - I was doing yard work in a T shirt today.
They are lighter then they look.
And mold making is harder then I thought, I must have gotten lucky with my first one because I've failed on the last two. Shooting for number 3 this weekend.
Posted by: Unobtanium-inc Jan 24 2021, 07:12 PM
So after three tries to make a larger mold for more cars, and three failures I went back to the drawing board. More research showed me an alternative method to making the mold that looked very promising, and a lot less work and mess. It involved DAWN soap and water, pretty simple, right? I tried and it was much easier. I poured resin in the new molds so tomorrow we shall see if the finished result is better. But I now have 11 car molds, so everything from a 917, to a Speedster, to a RSR. One drawback, the new method take all the paint off the little cars in the mold making process. Strange byproduct.
Stay tuned.
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Posted by: Unobtanium-inc Feb 3 2021, 09:25 PM
Ok, so lots of trial and error later, more error actually. I've upgraded the mold making twice and am much happier with the latest results, shiny and crisp, without any buffing or sanding. I'll keep working but the process is improving, and I'm still having fun!
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Posted by: burton73 Feb 3 2021, 11:17 PM
If your mold and material is very cold and the pouring area is cold you can have problems. Pre-warm up the molds and material to a nice 80 or 90 degrees or more and it will help. Also, if you have a vacuum chamber for some reason, mix, and then deair the mix for a couple of minutes and pour slowly in the mold. The very small bubbles will come out in the chamber Part of that combo is used for A/C system but the pot can be a modified 3 paint pot.
You can also use a paint pot and set it up for 30lb PSI. The bubbles will get so small that you will not see them but you have to leave the pressure on for a long time to make sure the plastic is hard. If not hard the bubbles will show.
I just put my pressure on the compressor line and leave it overnight and open it up in the AM
Been casting this way for 46 years.
Bob B
3 Gallon Vacuum Chamber and 3 CFM 1 Stage Pump to Degassing Stainless Steel
Set up is like $100.
Posted by: Unobtanium-inc Feb 4 2021, 06:38 AM
If your mold and material is very cold and the pouring area is cold you can have problems. Pre-warm up the molds and material to a nice 80 or 90 degrees or more and it will help. Also, if you have a vacuum chamber for some reason, mix, and then deair the mix for a couple of minutes and pour slowly in the mold. The very small bubbles will come out in the chamber Part of that combo is used for A/C system but the pot can be a modified 3 paint pot.
You can also use a paint pot and set it up for 30lb PSI. The bubbles will get so small that you will not see them but you have to leave the pressure on for a long time to make sure the plastic is hard. If not hard the bubbles will show.
I just put my pressure on the compressor line and leave it overnight and open it up in the AM
Been casting this way for 46 years.
Bob B
3 Gallon Vacuum Chamber and 3 CFM 1 Stage Pump to Degassing Stainless Steel
Set up is like $100.
Thanks for the tip!
Posted by: burton73 Feb 5 2021, 04:18 PM
This is a mixing paint pot I use for pressure casting. I think I got it on Amazon
Most I deair but sometimes I just go with the pressure casting
Bob B[attachmentid=779610]
Posted by: burton73 Feb 5 2021, 04:18 PM
Sorry for my mess
Posted by: Unobtanium-inc Feb 9 2021, 08:00 PM
Latest batch, new mold, some came out better then others. I'm redoing the mold on 2 of them. Still having fun.
Oh, and a one off batch, my niece Lark wanted blue with purple glitter, I couldn't refuse!
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Posted by: Unobtanium-inc Feb 11 2021, 06:45 PM
I've started experimenting with color, I got a tip that lite color will help to cover imperfections. This was a little too much color, the batch currently cooking has a lighter coloring. Fun!
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Posted by: Unobtanium-inc Feb 12 2021, 08:26 PM
So after the mint green batch I had an idea. What would happen if I added one drop of black to the whole batch? Would it be just enough to mask any imperfections. I like the result. And I ordered better resin now that I'm getting my technique down. I've been using industrial grade marine resin, it's cheap! But I ordered some diamond sparkling clear artists resin, so it should only get better from here!
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Posted by: Unobtanium-inc Feb 13 2021, 12:56 PM
Ok, so it's not clear yet, since the mold is curing, but eagle eyed folks will see a green 914 in the mold. These will be free, so the line forms now.
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Posted by: dakotaewing Feb 13 2021, 01:23 PM
Would love to have one! Please put me on the list -
Posted by: BananaTroll Feb 13 2021, 07:47 PM
Count me down for one please!
Posted by: poorsche914 Feb 13 2021, 08:04 PM
Joined the line 
Posted by: Mikey914 Feb 14 2021, 12:23 AM
Looking good so far.
Posted by: Betty Feb 14 2021, 10:41 AM
Consider me standing in line too! 
We can all chat about 914's together while waiting in queue. 
Posted by: Unobtanium-inc Feb 14 2021, 07:08 PM
Not very happy with how the 914 came out, I think the paint is messed up from earlier tries, I think I'm going to try with another car and a new mold.
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Posted by: Unobtanium-inc Feb 16 2021, 08:23 PM
I cleaned up the mold a little bit but can't decide if I'm going to redo it, they are coming out ok, not perfect. What do you guys think?
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Posted by: Unobtanium-inc Feb 22 2021, 06:03 PM
After much trial and error I think these are ready to be freebies at the next swap meet!
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Posted by: Mark Henry Feb 22 2021, 06:32 PM
They would make a cool night light. 
Posted by: Mikey914 Feb 22 2021, 07:18 PM
They look like candy
Posted by: Unobtanium-inc Feb 23 2021, 12:04 AM
They would make a cool night light.
Yup!
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Posted by: Tbrown4x4 Feb 23 2021, 04:03 AM
Now melt some Jolly Ranchers!
Posted by: Unobtanium-inc Feb 26 2021, 09:20 AM
The latest, the 904, and this one hurt. Try buying a 904 miniature, people are very serious about them!
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Posted by: Unobtanium-inc Mar 4 2021, 06:02 PM
My wife says I'm getting a little obsessed. But with all the swap meets opening back up, I've got work to do!
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Posted by: Unobtanium-inc Mar 11 2021, 02:07 PM
The Unobtanium cars, they will make their debut at the Hershey swap meet in May, FREE, first come, first served. Collect them all!
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Posted by: bretth Mar 11 2021, 05:26 PM
Nice. They look like Jolly Ranchers.
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