I didn’t notice any smell coming off of the cast Proofgrade acrylic. I’m going to try Marion’s method next time I think. 
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It can catch on fire if the fumes flash 
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Ooooh! That would be not good.
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that came out so good. I’m glad that my thoughts on using a oven and something round where tested and worked like a champ
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It’s a low (but not no) risk. More with extruded than cast and apparently from @marmak3261’s input Proofgrade is even less fumey 
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I’ll probably try it anyway…I use a laser…I’m fearless. 
(j/k)
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Faaaaaantastic @marmak3261 reminds me of yesteryear.
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Beautiful!
Maybe this has been addressed already, but I’m wondering if the acrylic is food safe?
This might be a question for @volivaa, but the data sheets seem pretty innocuous. Definitely need to keep below a combustable temp.
I didn’t notice a strong odor.
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Not sure if this was mentioned anywhere above, but does anyone know if cast vs. extruded affects how well the structure “slumps”.
I think it is a bit like using Proofgrade ply settings for a box store plywood. Relatively safe for the well informed, but differences in monomer content and additive content make it hard for the FNL to recommend it.
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That is NICE!! 
Great job @marmak3261 !!
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Nice Job! that’s gorgeous, thanks for documenting!
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Turns out Pyrex isn’t Pyrex either. They stopped using borosilicate glass years ago when the name was sold. 
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That came out really awesome! I could see doing this with a few different colors of acrylic and layering with each color rotated. C’mon July!!! 
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That might be a challenge. These are different from the squiggle bowls of @jordanloshinsky which use cutouts of whole sections of the rings that are rotated. This is all one piece that is cut and formed. It would be interesting to combine the two if possible.
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I like that idea too…could get some very interesting effects. 
I wonder if the acrylic would stick to itself though - it felt more rubbery to me than melty. Might have to glue it afterwards.
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Why not glue it first (since the glue is really welding), then slump it?
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Yeah, if you wanted a multi-color acrylic slump you would be well served to bond the colors while still flat, then slump the whole assembly. Acrylic cement should all result in an end product that is still pure acrylic (I imagine some are more fancy, but the basic “melt some acrylic in acetone” at least would ensure nothing but acrylic in the end product)
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I was thinking it might be harder to slump it if it’s multiple layers - the stuff is kind of “springy”.
(But I’m no expert, since both of my attempts were not exactly stellar results-wise…just need to experiment a little more with it.)
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