What Did You Buy Today?

[woodchucker]

damn, just like a box knurler I didn't know it was a cut knurler or how it differed.
I have 2 sets of sharp edged knurls , maybe I'll make a holder for using one of each to check it out.

 

[wachuko]

It uses the square edges of the knurl (a special knurl) to cut chips, rather than just smash them into the material.

It's a machining operation that makes a chip, rather than a forming operation.

Edit: Here is a longer one.

I think that's a cut knurler. Different beast from what we're used to.


Broke down and snagged an Albrecht chuck. Small 1/32"-1/4", stainless steel. We'll see how that works out. It's supposed to be new in the box, for A LOT less than McMaster lists them for. I had an extra arbor sitting in the box that will fit it, which was the deciding factor on this purchase.

Ok, so what and how does a cut knurler work compared to a bump.

Learned something new!

 

[coolidge]

why a bump style over a scissor?

My brother has used both cut and scissor knurling tools extensively in his business (road racing motorcycle shocks/forks). He was adamant that this Dorian cut style was far superior to the scissor so I choked down the 3x more expensive price.

 

[dkemppai]

damn, just like a box knurler I didn't know it was a cut knurler or how it differed.
I have 2 sets of sharp edged knurls , maybe I'll make a holder for using one of each to check it out.

I think with a surface grinder you could convert normal knurls into cut knurls. Just a sharp edge.

I haven't looked into making one, but I think the trick is to get the angles correct. Make it adjustable , it shouldn't be too hard to line up...

 

[mmcmdl]

I was just going to ask, what that dual center sine table thing is for...Looks almost exactly like what I need to grind small shafts between centers! LOL

Yeah, I'm not entirely certain. It appears made for a mag table as there's no provision for bolting it down to anything.

That is for checking tapers on shafts either ground or turned . Set jo blocks to correct angle , use this on a surface plate with surface gage and indicator . If angle is off , adjust grinder table or taper attachment to suit . These were used years ago before optical comparaters were out , but still a nice accurate way to check tapers .

 

[markba633csi]

After going years without a big vise, finally got one: "Galaxy"
Taiwan- 70s? 80s? -- good screw and nut-- 50 clams

I can certainly make use of this big boy- beam me up to the Galaxy Scotty

 

[682bear]

Grabbed a Sjogren 5C chuck off OWWM...







It has some light surface rust, but seems to work good. I'll see how well it cleans up.

I haven't decided whether to machine a backplate to fit this to my South Bend or one of the Hendeys...

Probably the SB... I already have a threaded backplate I can use... and the Hendeys already have a 3H collet system that goes directly into the spindle.

-Bear