[SML] Dissolving foam

[Richard John Archer]

I don’t know why this isn’t working.   I use actetone without any real problems although it’s pretty “weak”.  You can try “diluting” MEK  it with water.   I use MEK as is   with a spray bottle of water handy to spray on the MEK  to arrest the eating away.  Outside, with a mask , of course. ….and yes, using a router to rout away the big stuff and then just  sculpt the edges with solvent (anything with ketones ought to work too)

On Sep 20, 2018, at 5:44 PM, jdunfee12--- via Stagecraft <stagecraft at theatrical.net<mailto:stagecraft at theatrical.net>> wrote:

I tried both the beaded white type, and the blue house insulation.  And while the white beaded foam did respond a bit more, it was not nearly as much as I recall it doing perhaps 40 years ago.

I tried again with the M.E.K, with a very light touch, and it still ruined the piece.  Some of the areas had very deep, large diameter holes.

I think I will just stick to using a router.  That generate the best results.

-Joe

On Thursday, September 20, 2018, 4:06:04 PM EDT, Stephen Rees via Stagecraft <stagecraft at theatrical.net<mailto:stagecraft at theatrical.net>> wrote:
Are you using open cell or closed cell PS?  That would make a difference. On the white closed cell type, acetone and spray paint has been adequate to the task.  Open cell or blue foam much more resistant.
Steve

Stephen E. Rees
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