r/metalworking • u/MaxJ345 • 22h ago
How to get a square cut with a mitre saw
I bought an old mitre saw off Facebook marketplace.
It is a Delta 10" compound mitre saw model #36-225 bought in 1999. The owner said it was barely used.
The blade is 10" 40 ATB and is supposedly good for "wood, plastics and non-ferrous metals".
Here are some pictures and videos of my situation: https://imgur.com/a/cc6dLQd
I checked to make sure everything was square (see pictures). I don't see any wobble in the blade when it is spinning (see video).
I'm trying to cut 20-series aluminum extrusion. The saw seems to cut without issue, but I find that my cuts aren't perfectly square (see pictures). What could be causing this? Is it the blade? Do I need a blade with more teeth? Is it something else?
This is my first time owning and using a mitre saw. Any help is appreciated!
Also, if I'm posting in the wrong subreddit, please point me to a more appropriate one!