Originally Posted by
MikeB52
Might be an interesting experiment but personally, not optimistic it’s yield much better results than a slow warm soak at ambient temps TBH.
Did a fair bit of vac bagging in aviation, as well as a bunch of hobby type work on this forum pre mg..
The thing with vac chamber and bagging is it does all it’s air evacuation pre hardening, or while the epoxies or resins, or lacquers are still solvable and allows air to flow and molecules to ebb, flow and move around each other. Chambers allow the air out the top, bags use a non compressible porous strip all around the edge of the bag for the air to wick.
Once things are hard, as in bone, horn, or post cured epoxy projects, you won’t pull much beyond the outer 64th of an inch maybe, and IMO, risk crushing the outer cells and causing shadows or fog on the surface once things return to atmospheric pressures and de-flex.
Could be wrong of course, just thinking of the way it all works from my experiences..
I’d say go for it on a scrap piece, as you have all the goodies.
Maybe a series of low pressure pulls to cycle the horn as opposed to a 28 inch long steady pull overnight might flex the materials and yield good results.
:shrug: