I was inspired by all the posts in the hole hawg threads to testify about my experience with the Lennox One Tooth hole saws. It’s a typical steel hole saw until you get to the business end. Instead of a bunch of little teeth it has one(1!) monster carbide tooth. The tooth is oversized enough that any cut-outs fall right out.( No more running screws into your hole saw!) It cuts so well that I was able to use my 14.4 cordless to drill a few holes. (note: don’t do this a lot). It’s a lot faster than a typical hole saw, and I had far fewer problems with kick back, even with a Hole Hawg on high. It doesn’t cut very clean holes ( pretty much shreds OSB) and it isn’t as smooth when you hit a nail the wrong way, as the one tooth can try to yank the nail out instead of cutting through it.
It is a lot more expensive than a Milwaukee high speed steel hole saw – I think $35-40 for a 2 1/2″? BUT – I didn’t get a sprained jaw(’98) or a wrenched wrist(’01) or lose my temper (’bout every dam time I used my old hole saws, esp. the bigger ones)
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Start your cut with the hole saw. Lube the hole saw with your choice and drill on. Much smoother.
You and IMERC make good points. I used a similar single tooth hole saw in 7/8". It was a favorite to cut holes for connectors in panels. A lot handier than a conventional toothed model. As I remember it it was expensive but well worth it. Unfortunately it walked off. I guess someone needed it more than I did. I would like to replace it but never dug deep enough to find a replacement. If you have a line on a supplier please clue me in.
Lubing hole saws, and saws in general, can save time, trouble and sometimes having the saw binding up and swinging the rear of the drill at your jaw. More than once I have had my bell rung, this might explain a few things, by run away drills. Once had a drill yank a helper off a 12' ladder. I hear screaming and come running. There he is hanging from the drill and spinning. He was too freaked out to let go of the trigger. Had to pull the cord to turn it off. Lucky he had tightened the chuck. No harm other than a bruised ego.
I have had luck with a wax like lube made by Oldham called "CUT-Ease". Works pretty well. The real impressive thing is that I keep it in a diamond plate cross-bed tool box and it hasn't melted. If it can stand Florida in July I'm impressed.
Another thing I have found is that if you can find variable pitch hole saws, I think Milwaukee makes them, they have a significant resistance to binding compared to its evenly toothed cousins. Not as good as that single tooth model but an improvement none the less.
Thats not the bit that says on the packet it comes in "for use in drill presses only" is it?
I saw a hole saw like the one you discribed....its adjustable for different size holes but when I read that on the pack I just went, "shucks". Was about $30 as well.
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