Hydraulic Die Forming Discussion Group

Re: Bubbles- steel epoxy dies., Bubbles- Steel epoxy dies

florent

On Mon Oct 20 '08, Jon Olson wrote
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>I have found it difficult to get consistent results using "Devcon Steel Epoxy". I also found the product to be too expensive along with the bubbles created.
>I have started to use iron powder mixed with "Devcon Two Ton Epoxy" and find that the bubbles persist. I've tried using a vibrator (vibratory polisher), on the epoxy separately and mixed with the iron powder. I've also tried adding 5% acetone as advised by Devcon with poor results. The opportunity to do anything is severly limited by the fast cure rate of the mix. Because of the extremely thick consistincy and the fast cure rate I cannot imagine the vacum machine being effective.

>I would apprectiate any suggestions on bubble elimination.

>Jon

Jon, I think vaccum would work even if the resin is pretty thick, You should at least give it try. You ca also try to pour the resin into the mold from a distance of about 30 inches wich wil make a very thin "string" of resin an get most of the air out. Follow this link and you will see the technique I am taking about.
http://www.youtube.com/watch?v=NVvGc7VDFvc&feature=related
Good luck

Florent

Mon Nov 17 '08

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