Michael, I used to punch everything before the stepped bits, they aren't cheap either though and they make a huge toxic mess. An electro magnetic shavings catcher would be great, just turn it off over the trash bag!Slugbusters are expensive, even the smaller ones. stepped drill bits are great for the smaller holes, you can drill holes in sheet metal up to an inch and 3/8
Probably the size of the pre-drilled factory holes.They actually called me this morning (jay-cee) because I ordered the 1/4" rivetnuts with the m6 tool. I do need to order some m6 rivetnus or plusnuts. Hey Orten, given the huge array of styles & characteristics, what were the factors in you choosing the particular 1/4-20 rivet nut you selected?
60 bucks for the 1/2 inch hole size, 90 bucks for the 3/4 hole size, cheapest way to buy them is to get the whole set for about 250 bucks. a stepped drill bit is about 20 bucks and will drill several sizes of holes.As I recall, each size hand powered knock out was about $40.00.
They are easy to use.
you will still have to drill a hole to use the punch, a 7/8'' hole for punches bigger then 3/4'', unless you use existing holes! what is toxic? a tiny amount of paint dust?Michael, I used to punch everything before the stepped bits, they aren't cheap either though and they make a huge toxic mess. An electro magnetic shavings catcher would be great, just turn it off over the trash bag!
it really does not matter, punches are very expensive and stepped drill bits are fairly cheap. for somebody who only needs to make 1 or 2 holes, (which is 95 percent of the people on this forum) a stepped drill bit would be the best and lowest cost option!Used the 7/8" punch to make the hole for the larger punch.
Thank you very much for the tutorial. And hat tip to @atoine. I read both of your tutorials. Minor changes with a regular washer (didn't have a k-nut on hand), hex head bolt allows me to slip a ratcheting wrench over the bolt to tighten the nut. Didn't use grease - I'll guess we'll see how the hardware holds up.It turns out DIY is so simple I'm not even sure how the tool makes it go any faster.