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I purchased a 15" x12" x 2.5" medium wave mold. I have a piece that has the rounded edges from a full fuse.

Will the curvature of the slump allow the piece to stand on edge or will I need to cold work the edges?

Anyone have experience with this type of mold?

Thank you,
Vernelle

If the edge is straight to begin with (and squared), and you place it properly (completely straight/squared) on the mold, it will stand on its own. It will, however, be more stable if you coldwork the edge flat.

Dana W.

Agree with Dana. I always square mine off to get the additional stability. I would only add that a lap grinder makes quick and easy work of squaring off that edge. Doing it by hand might entail an awful lot of labor ...

I use my glass tile saw to get a nice straight edge. Easy!

Thank you all for your answers. I teach fusing at a not-for-profit glass school here in Fort Worth and can use their equipment......lap grinder, saw, wet belt sander.... So I will be cold working the piece.

Thanks again for your help,
Vernelle

@ Barbara: Do you saw after the slump?

Sawing is much easier before the slump, and when I get a nice, flat edge, I do not do any coldworking.