Irwin Speedbor Max Speed Bits?

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Forum topic by 12strings posted 05-13-2013 11:11 PM 2366 views 0 times favorited 1 reply Add to Favorites Watch
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434 posts in 2385 days

05-13-2013 11:11 PM

What do you think of these bits…especially as compared to an auger bit?

I bought one for a specific purpose because my spade bit wasn’t cutting it, and I liked it…but how do they compare to auger bits?

-- I'm strictly hand-tool only...unless the power tool is faster and easier!

1 reply so far

View crank49's profile


4030 posts in 2971 days

#1 posted 05-14-2013 01:35 AM

I have a few of these and to me they are pretty much like all “self feed” bits.
For making holes, they get the job done but you have to be careful they don’t bind up.
And you have to be sure you can reverse the drill to back them out of a non-through hole.
My drill press does not have reverse, for instance.
They will work in a hand brace type drill, reverse is no problem there.
A ship auger type bit is better for long straight holes.
A spade bit will make a fast, rough hole for less money.
A brad point or forstner bit will make a much cleaner hole and can be pulled out while drilling.

I have considered grinding the threaded tip into a smooth point to see how that might work for a drill press. Should be somewhere between a spade and a forstner; but I haven’t done it yet.

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