Looking for Machinist Service

[Acruz]

I need to have 3/16 of an inch removed from the diameter of this knob and then re knurl it. I’ll be more than happy to pay for ur services.

TIA

Angel

 

[DanCarey]

You can remove material from the knob, but you can not knurl it as you have no way to hold it.

 

[cmatera]

Can you screw the threaded part into a hex piece and hold that?

 

[bandg]

How important is the knurling to you? I've turned such things down with a drill press (or even a hand drill) and file. I've also used a sanding wheel in a dremel to reduce things while turning them in a drill. Such methods aren't ideal but they work well if you can do without the knurling.

 

[Acruz]

@bandg.. I thought about that but i want it to look good.

 

[vmaxpro]

Just have someone make a new piece instead of turning that one down its easier. To much pressure so knurl that cleanly.

 

[Acruz]

Okay, I can do without the knurls..

 

[Hepotter]

Whatever became of "Marmot militia"? He is an excellent machinist, but seems to have dropped out of the airgun world?



Hoot

 

[cea1960]

The piece looks like it can easily be gripped in the jaws of a lathe. Many of the older lathes, like the one I used to own, have a knurling feature that is very easy to use. I will pm you the number of a machinist I know. No promises that he'll do it though.

 

[Acruz]

thanks..

 

[Motorhead]

Agree ... no way to re-knurl.



As an FYI in doing knurling the part to be knurled would be of the same diameter and much longer held is LATHE jaw or collet being one piece .. very stiff and unflexing.

The knurl rollers placed against the END of this longer rod of material just hanging out enough to get roller contact ... done then parted off with parting tool, material pushed out a tad further and process repeated.

 

[Acruz]

Thanks for the info.

 

[Odoyle]

I wouldn't bother. Why not just go to your local hardware store and buy what you need. Thumb screws...

Or EBay...

 

[Acruz]

LOL.. thanks partner. that might be a better way to go.

 

[scoutscope]

My 2 cents. Chuck it up, turn it down to appropriate dia, and grab it with a pinch type knurling tool. I wouldn't take heavy cuts, or use a push type knurling tool. That being said, if you don't have a lathe it's probably easier, faster, and cheaper to buy what you need.

 

[Bigragu]

Acruz- do you mind me asking what this knob is for? If it’s for the impact, send me a pm. I converted all 60 fasteners on my impact to stainless, and to top it off I wanted a stainless knob for the rear shoulder adjustment, and a knob for the barrel removal, like it used to be when the impacts first came out. I was able to source two stainless knobs that are both approx. 7/8” in diameter with knurling, so they matched up. For the shoulder adjustment it’s 5mm thread pitch by 25mm thread length, and for the barrel lock 6mm pitch and 8mm thread length

 

[Acruz]

Thanks for the kind offer Augie. Just trying to convert a monopod to a QD monopod. I’ll try eBay a Odoyle suggested.