i think i read that tin snips work about the best...not real sure.....i know how it breaks, chips, flakes ect.....i had that problem but mine was with glass...but my shop teacher can cut glass like noone ive ever seen....i broke the piece i ordered after i casted it out of alumanum...so i had a nice alumanum copy...but wanted to make a glass too....so he cut a piece for me....surprised the band saw doesnt work....bet with the right blade and speed it might...hmmm...ill keep thinking...i know i read tinsnips somewhere..but i dont see it working much better....maybe get a rough shape with whatever you can get the best results with then sand/grind it to size...good luck