I need to drill about fifty 1 1/2" holes in 5/8" plywood. The last time I did this, I use a plain carbon steel hole saw, and it was a pretty miserable experience. The saw teeth clogged quickly, it overheated a lot, the plugs were hard to remove, etc.
I was planning on using a bi-metal saw this time, but I don't see that they've done much to improve the basic design. None of the ones I've seen appear to have changed anything to keep the teeth from clogging, for example. I have seen some that have a plug-ejection device that works by reversing the drill, but the drill I will be using isn't reversable.
I've searched the archives & the last threads that had much on the topic are a couple years old. I'm hoping someone has discovered something useful in the meantime.
Thanks!
Doug White