Cutting brass door knob

[Planeiron]

I've noticed that there are many very skilled metal workers on here so forgive this question as I have next to no metal working experience. I bought these door knobs for a job I'm currently working on. These are for a rim lock. I assumed that when the rose was removed the door knob would sit flush to the rim lock but there's a section that protrudes.



Rather than sending back I was thinking about cutting off the part indicated with the stick.



I have limited tools for metal, mostly woodworking but have hacksaws and files. Any tips to get a good clean square finish? Or should I just get something different. Was keen to keep as these have a nice insert that allow the rose to be secured on the wood side with no screws showing but don't want to make a dogs dinner of it. Thanks

 

[NickM]

I think you should be alright if you go carefully with the hacksaw and files. Having seen your skills with wood, I think you'd end up with a square end. The end wouldn't be seen so the finish presumably isn't critical, but you could sand any file marks out and polish it if you want to.

You'd be cutting off the slot where the circlip goes, but presumably that doesn't matter if you're not using the rose?

 

[duke]

Hacksaw will work but use a blade that is thicker and taller than the usual thin blades which tend to wander. And as NickM says a file will clean it up.

 

[Raymedullary]

Bore appropriate size hole in piece of hardwood which is the thickness of the part that you are leaving behind, make a sawcut in the wood to allow you to clamp it in vice around the brass, cut with hacksaw against the wood.

 

[Cabinetman]

Bore appropriate size hole in piece of hardwood which is the thickness of the part that you are leaving behind, make a sawcut in the wood to allow you to clamp it in vice around the brass, cut with hacksaw against the wood.

Yes, And keep turning the knob every few strokes.

 

[Sheffield Tony]

I was going to suggest rotating it periodically as as you saw too.

As you have a shoulder to cut to, if you are nervous of wandering into the good part, you could slip on a steel washer (possibly the one that came out of the assembly), saw up against that as it it a bit harder than brass, may rotate so not get damaged, then file the small remaining step off carefully ?

 

[Pete Maddex]

Yes, And keep turning the knob every few strokes.

Ooooo saucy



Pete

 

[Planeiron]

Thanks for all the great suggestions. More confident now to give this a go.

 

[Planeiron]

You'd be cutting off the slot where the circlip goes, but presumably that doesn't matter if you're not using the rose?

Yes, rose no longer needed so the circlip slot will be removed

 

[Cabinetman]

Ooooo saucy



Pete

Brilliant, from someone who normally spots a double entendre instantly lol.

 

[Planeiron]

Here was my setup. Door knob fixed to spindle and held in the vise. Washer up to the shoulder as suggested. Rotated knob every few strokes (it's like a carry on movie).



Very pleased with the result. Might end up sanding the little recess but its probably not necessary. Thanks again for the help.