I need to trim the glass diffuser for an LED light to fit inside a cabinet. I need to do it quite precisely and I have not been very good in the past using a standard glass cutter (either I have trouble scratching a precise straight line or it doesn't break smoothly).
The piece of glass is about 1/8 thick and 1.5 inches deep so I don't need to cut much. I only need to trim off about 1/4 inch (which makes using a hand-held glass cutter even harder). I'm pretty sure the glass is tempered.
Would a dremel with a diamond-coated rotary disc do a good job of making a smooth cut? (for example
Would this work? Any other suggestions? ` Note: I tried using an angle grinder (with a metal grinding blade) and also a belt sander - but both of those approaches ended up more melting the glass (it got "yellow" hot) which caused it to crumble and ooze.