Enlarging a hole in knurling wheels

Photos uploaded! The tool is still only loosely assembled as I have yet to fix the pivot pins. I think I will stake them all and add a little Loctite, just for good measure. None of them take much axial load, after all. First test in anger will be the adjusting nut on the tool itself.

John

Bogstandard John,

I appreciate your comments and if things wear as you predict, I'll probably persue that route. However, I anticipate using the tool maybe two or three times a year, I'd estimate. It was really more of an exercise in swarf generation than anything else. I like designing tools and making them, too. It's just that I prefer to make things that I might, just might, use at some time in the future. Next up is the powered toolpost spindle. I've got the bits together over the last couple of weeks and expect to start hacking away tomorrow or Thursday. It rather depends on the weather. I only managed to get half the orchard mowed today before the rain came and I'm afraid that's a priority at the moment, or so I'm told ........

John

John, I have a couple of knurling tools and spare knurls and I change them as required and have found that the pins are very hard indeed, I also query if the Silver Steel is adequate for this application. I am sure there is a supplier of hardened steel pins but I do not know where.

Clive

I'm almost certain I've seen 0.250" diameter carbide tool blanks (or broken shanks) used for this application.

Martin.

Edited By blowlamp on 08/07/2014 22:41:02

Martin,

The last time that I was I the UK, I got some 1/4" HSS tool steel to make the pivots, but I couldn't work out how cut it to length. Perhaps I could try the trusty Dremel and a cutting disc? Maybe I'll give it a try later in the week.

John

Here in NZ the best place to get dowel pins is any of the bearing wholesale out lets. Ian S C