I would imagine you are limited to a different depth with each one by the drill point to where the threads would start because if the threading starts before the drill has gone all the way through the material it would want to put to much force down on the point and either strip the threading as it starts or break the drill.
@dudleycornman1624 Жыл бұрын
I've used them quite a bit to drill and tap holes in large beams, etc using a mag drill and they work very well. The metal cannot be thicker than the length of the drill part because once the threads engage it will drive it too fast for the drill.
@dudleycornman1624 Жыл бұрын
Oh and I believe the mag drill turned at 450 rpm?
@yonmusakАй бұрын
Always trust a West Mids engineer. Thanks for the video - really helpful!
@bulletproofpepper2 Жыл бұрын
Thanks for sharing. I bought the Dewalt brand of these and have used all of them to great success. The Dewalt brand cone step bit is a game changer and that’s why I went with their drill taps also. I’m glad the drill pro is a good one too.
@TheKnacklersWorkshop Жыл бұрын
Hello Alan, An Interesting review... I have not seen them before... Take care. Paul,,
@kentuckytrapper780 Жыл бұрын
I've had good luck with the drill pro stuff, the bits work great in 1/4"..great review.
@derkarhu5079 Жыл бұрын
These are ideal for use with variable speed drills, so you can spin them up to get the drilling started, then back off the speed (quickly, now !) to do the tapping part...i always use cutting fluid with these, unless somewhere in back of beyond, where you might have to get a couple of drops of oil from your vehicle's oil dip stick...
@stringmanipulator Жыл бұрын
great review, I've been curious about those for a while. Looks like it's worth trying :) thank you for another great video. I've learned much from your channel. 😀👍
@multirole240 Жыл бұрын
Thanks Alan very enlightening.
@4110mahindra Жыл бұрын
never had any luck with these. Possibly running too fast in my cordless drill. They stripped threads or broke in the the hole after binding on a chip