Re: sealing FDM parts

From: GTC (
Date: Mon May 15 2000 - 15:57:23 EEST

I used to use a product from Chembar in Ohio. It was a urethane (3177 if I
recall) to seal cardboard models. I thinned it with acetaone and brushed it
on. It took about 6 hours to cure enough to sand. It was a good penetrant.
If i recall it was a 60%urethane to 40% acetone mixture. If you use any
urethane product it should allow you good penetration but try it on a scrap
part first!

Doug Groh GTC Specialties
13313 W. Star Drive
Shelby MI 48315


----- Original Message -----
From: <>
To: <>; <>
Sent: Sunday, May 14, 2000 9:34 AM
Subject: Re: sealing FDM parts

> In a message dated 5/12/00 12:03:02 PM Eastern Daylight Time,
> writes:
> << I had on stock and mayby the problem was that this
> stuff had a too low viscosity. I placed the parts with epoxy in the
> chamber, but the layer epoxy on the part was too thick and not constant.
> I haven't tried it, but I read once about using acetone to thin epoxy to
> as a sealant for boat models. The epoxy will still set up, but will be
> enough to soak in.
> Andy Scott
> Lockheed Martin Aero Sys
> For more information about the rp-ml, see

For more information about the rp-ml, see

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