Make a screwhead?

[rogart63]

Not sure i have the right word for it? How can i make a  new impression in a screw? Besides having a lathe and a disc. Are there any files that a thin enough to? 

[measuretwice]

I've done so with a very fine slitting saw in a mill with some success, but the screw was large compared to watch sized (more like pocket watch/travel clock).  I' have some the of the files for the screw slot as in the link below.  I think I tried it once with the file and concluded it is bloody difficult and the file seemed too big.  It needs a very steady hand and I think a largish pocket watch sized screw to work, at least that was my limited experience with it. 

https://www.eternaltools.com/screw-head-slotting-file

Edited May 13, 2018 by measuretwice

[TimFitz]

It sounds like your trying to clean up screw threads is that correct? Or the slot for installing the screw?

 

[rogart63]

7 minutes ago, TimFitz said:

It sounds like your trying to clean up screw threads is that correct? Or the slot for installing the screw?

 

We tried to make a new screw for a setting lever spring where the old one had a bad  thread . So made a new thread but couldn't find a low enough screwhead to clear the dial. i tried to make the head a little lower by putting it in a pin vice. That worked but the slot for the screwdriver was also removed. So was only wondering how we could make a new one. Just for fun to know and maybe have some use for some other day  

Edited May 13, 2018 by rogart63

[rodabod]

Screw head slitting (slotting) file is an option. Stubbs used to make them. You basically have to wait for one to appear on eBay. Or make one. They are very useful.

 

[TimFitz]

4 hours ago, rogart63 said:

We tried to make a new screw for a setting lever spring where the old one had a bad  thread . So made a new thread but couldn't find a low enough screwhead to clear the dial. i tried to make the head a little lower by putting it in a pin vice. That worked but the slot for the screwdriver was also removed. So was only wondering how we could make a new one. Just for fun to know and maybe have some use for some other day  

Thanks for clearing that up. So as " rodabod " said , a slotting file.

[TimFitz]

I have one a #8 I believe I got it from Esslinger , It does the job

[StuartBaker104]

Here are a couple of options

https://www.hswalsh.com/product/slotting-screw-head-file-cut-4-hf71

https://www.esslinger.com/screwhead-file-with-tang-makes-slot-in-top-of-screws-swiss-vallorbe/

Ideally you would put the screw in a lathe and use a double roller file rest to keep the file in the right place

 

[rogart63]

6 hours ago, StuartBaker104 said:

Here are a couple of options

https://www.hswalsh.com/product/slotting-screw-head-file-cut-4-hf71

https://www.esslinger.com/screwhead-file-with-tang-makes-slot-in-top-of-screws-swiss-vallorbe/

Ideally you would put the screw in a lathe and use a double roller file rest to keep the file in the right place

 

Seen that done somewhere on the internet. But think i can arrange something on my lathe. have an old unimat . So can probably make some kind of support for the file to rest upon . 

[jdm]

19 hours ago, rogart63 said:

So can probably make some kind of support for the file to rest upon . 

There is a thread on this very same forum about that.