Understanding what cuts are possible to make and what isn't is a huge part of your glass cutting skills. Knowing instantly if a piece can be cut in just one score or if it will take multiple scores will save you precious time. Inside curves (a curve that cuts into the piece you are saving) are the hardest cuts to make and most times you'll need to cut those curves multiple times to get them to release without breaking your glass. Here's a quick and simple guide to understanding what cuts can be accomplished in just one pass.
First we need two measurements: The depth of the curve and the length of the curve. The depth is measured from the deepest part of the curve to the edge of the glass that you will be removing (shown below with the vertical purple line). The length is measured from the curve's starting point to its ending point (shown below in blue).
If you can fit 3 or more depths along the length of the curve then you may very well be able to cut that curve in just one cut. The green arrows below are the exact same size as the purple arrow (just running horizontally rather than vertically). You can clearly see that you can't fit 2 depths along the length of the curve. That means that this cut is most probably impossible to get out in just one cut. I would make this cut in small, multiple cuts.
Now this was an exercise in patience. Sheri ended up with a last minute deadline to finish her Sugar Skull and to be honest I didn't think that she would make it-- but she did! Most impressive though, is the fact that the quality of her craftsmanship NEVER wavered. I've put this along side the Sugar Skull that I made last Halloween and I'm not embarrassed to say that I like Sheri's more than I do my own! This is a piece to be proud of for sure. Look at those teeth (and eyes)!
Lisa also made a completely stunning Window this week and it all started with a small cut glass bowl. She was originally going to just frame this only on the sides and leave the top and bottom blank but in the end she added two more clear borders which frame the entire piece up beautifully. This is a winner for sure and people sure seem to love it over on the Facebook Stained Glass Patterns page as well.
Let started a new panel this week and even got it all traced onto glass and cut out. Once that was done she moved on over to the grinder and got the bottom half of it ground as well! I have no doubt that she'll be wrapping these pieces when she comes back in because at this rate the rest of the grinding won't take her very long at all.