Post up your ported cylinder Artwork

[redlight066]

Very nice Al.

 

[MG porting]

View attachment 169757 View attachment 169758 View attachment 169759 View attachment 169760

You really like putting in them finger port's looks good drf256.

 

[Dub11]

You really like putting in them finger port's looks good drf256.

I think he just like fingerling.......

 

[MG porting]

I think he just like fingerling.......

Lol.

 

[wcorey]

Any guesses what I'm up to here? It does somewhat relate to this thread...

 

[MG porting]

Any guesses what I'm up to here? It does somewhat relate to this thread...

View attachment 170347

wrist pin?

 

[cus_deluxe]

Looks like i see threads on there?

 

[MG porting]

Looks like i see threads on there?

Yae hummm tools maybe or a adapter maybe.

 

[wcorey]

Looks like i see threads on there?

72 tpi

 

[Deets066]

72 tpi

Dang that’s a lot

 

[huskihl]

Any guesses what I'm up to here? It does somewhat relate to this thread...

View attachment 170347

Mc182 mid-section?

 

[Deets066]

Mc182 mid-section?

Oh good one, I had no ideas

 

[wcorey]

Mc182 3mm collets, ‘spensive little things.
And I’m addicted to the cheap chicom 3mm shank tooling, sick of nikasil beating up on my good stuff.

Was making shims for the 1/8” collet but it still doesn’t hold well enough without really reefing it down and it’s starting to round off the flats.

 

[srcarr52]

Mc182 3mm collets, ‘spensive little things.
And I’m addicted to the cheap chicom 3mm shank tooling, sick of nikasil beating up on my good stuff.

Was making shims for the 1/8” collet but it still doesn’t hold well enough without really reefing it down and it’s starting to round off the flats.

I figured those would be metric thread? 72TPI is pretty close to 0.35mm pitch.

 

[huskihl]

Mc182 3mm collets, ‘spensive little things.
And I’m addicted to the cheap chicom 3mm shank tooling, sick of nikasil beating up on my good stuff.

Was making shims for the 1/8” collet but it still doesn’t hold well enough without really reefing it down and it’s starting to round off the flats.

If your plan works out, I'd help cover your time and costs to have an extra

 

[wcorey]

I figured those would be metric thread? 72TPI is pretty close to 0.35mm pitch.

I’d assume metric also but I don’t have a metric gear set for the lathe.
72tpi is so close I can’t discern any difference and seems to work fine.

I made a few out of some random tool steel but not entirely happy with the threads, it really wanted to gall and was difficult to get a smooth finish.
Can chase with a triangle file to some degree but even the really tiny Swiss jobbies still don’t have a sharp enough corner for this small of pitch.
I threaded them in and out of the handpiece a few times before heat treatment to roll them a bit smoother but don’t want to repeat that too many times.

Have a draw full of unlabeled heat treatable steel, need to play around with some different ones.

Fooling with stuff this small challenges my deteriorating eyesight and to use adequate magnification puts my head awfully close to the spinning chuck, lol...

 

[wcorey]

If your plan works out, I'd help cover your time and costs to have an extra

If I can master the threads I’m sure I can distribute a few.
Already sick of playing with them...

 

[wcorey]

 

[Wilhelm]

I think those are M8x0.75 or M10x0.75

We had those at work but changed to tools/grinders with an outer nut pressing an independent free floating collet because the type pictured above wore out too fast and had to be replaced too often.

What's the diameter at the threaded end?
Just curious.

 

[wcorey]

What's the diameter at the threaded end?
Just curious.

4mm
A little smaller than you picture...
I believe it's proprietary/specific to Nakanishi and around $60 a pop.