Copper fixings

[Cobbler]

Google copper plating. Works on a lot of solders too. Think you need copper sulphate

Copper sulphate turns solder a sort of antique black. I used to solder up terrariums & “age“ the solder using copper sulphate solution.

 

[Maker]

You could "Flowdrill" it.

It's safe to say you piqued my interest.

I machined my interpretation of a flow drill, 30 degree included angle on the taper with small pilot and an 8.5mm parallel section. It got very hot but did got there eventually. Tapped M10x1.5, I don't have a 1mm pitch tap but I think a finer thread would work even better. I think fittings tend to be thicker than pipe too which would improve the thread too.





Edit: here's an M6 one, works even better with a finer thread.


There's about three fully formed threads there, turned our quite well I think.

 

[Ctreanor13]

It's safe to say you piqued my interest.

I machined my interpretation of a flow drill, 30 degree included angle on the taper with small pilot and an 8.5mm parallel section. It got very hot but did got there eventually. Tapped M10x1.5, I don't have a 1mm pitch tap but I think a finer thread would work even better. I think fittings tend to be thicker than pipe too which would improve the thread too.
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Edit: here's an M6 one, works even better with a finer thread.
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There's about three fully formed threads there, turned our quite well I think.

I did mention the flow drill option today and I'm not sure our milling drill will spin fast enough (or so I'm told) but given the amount of work we do that involves brazing the wee brass inserts to steel / brass pipe it could save a lot of time cleaning up before polishing or going through the antique process

 

[Maker]

I did those with a cordless drill at probably around 2000 RPM if it helps.

 

[8ob]

Why cant you push a thick wall sleeve up inside the fitting and drill/tap through the copper into it Nothing visible from the outside.

Bob

 

[Ctreanor13]

As great as these ideas are, unfortunately, I'm not in charge of fabrication. I do get to reject their work however and depending on who worked on it, that's a regular occurrence. Today I rejected a bespoke fitting based on welds that look like I attacked them with my arc welder yet they were done by a 'coded experienced welder' with a mig... Go figure