[Project 3] Dickson T1 Tool Holder

Lee,

The block was held in a very substantial vice, initial 45 degree set by angle guage, then checked using contact probe at two points in vertical and horizontal plane. As said above, 45 degrees is 1 in 1 slope, so with zeroed probe you should get an equal vertical movement for each horizontal movement. If not you just have to tap adjust until you do, tighten and try again.

Only suitable for one off making not mass production.

Ah yes, I see. Thanks for getting back to me. I'll add the 1:1 technique to my toolbox.

I did see both of those posts, thank you.

Not overly keen on using a countersink for this.

Seen some 45 degree side cutters and was considering something like THIS.

I think I'm going to go for a sine plate, 'cos why not (and I think I'll get use out of it beyond this project).

Detour: [Project 4] Sine plate

Those insert cutters won't work as you need to get down into the bottom of the Vee, you need something that goes almost to a point if using an angled cutter.

A few suggested a shaper for these types of jobs, this popped up on my Youtube today which you may enjoy.

Edited By JasonB on 24/05/2020 19:29:13

Actually the bottom of the 'v's are quite blunt:

That cutter with those inserts was just a quickly Googled example.

I'm sure you can pick-up sharper cutters.

Lee that cutter will swing an inverted flat ended cone about 25mm across, So when used to cut the larger side of the Vee it will completely remove the smaller side, you need something that will cut like the red line, maybe 1mm at the bottom.

Turn the work 45 degrees - put it on its side.

Hi Lee, Guys,

A 90 degree HSS or Carbide countersink will easily cut those "V" slots. The reason I said to take it easy with the cut, is that the shaft size on some of the counter sink bits may only be 1/4" diameter. As are some of mine. I have a nice six flute one that would do the job at full depth because it is on a 20 mm shank and is only 25 mm diameter. I've got that one in a plastic handle and use it for deburring holes.

What do you measure with to gain that level of accuracy?

I tried to use a 10ths/inch indicator which measures 6 10ths/inch over 480mm.

Although it's hard with my setup as it's not 100% rigid. Might end up making something else.

I swing a lever DTI in a collet chuck at 70mm radius only a 0.01mm one but easy to see that the needle only moves part of a division

Ha, that's cheating. ​​​​​​

Do you have a picture of your setup/shaft (no, I will not rephrase )?

.

Missed that, yesterday, Jason

The opening ‘titles’ are sheer joy ...

I shall watch it with due reverence, later.

MichaelG.

Ah, so you have a bought holder.

Maybe that'll work better than my janky Heath Robinson setup.

Following on from Jason's shaper video which I found most interesting was this automotive manufacturing video from 2008. Particularly liked the crankshaft forging part starting at 8:08 (can you guess yet what this lump will become ? )
DaveD

The interesting parts start at 2:00 in

Edited By Meunier on 26/09/2020 16:04:33

Complete fail ! here is the missing link to the video mentioned...

https://www.youtube.com/watch?v=Uv30kAL2D1c

DaveD

Received mine today from 'you know who'. It's soooo tiny!