hotponyshoes
Member
- Messages
- 6,401
- Location
- Somerset. Uk
I need to put some various size oval holes in some 3mm sheet alloy (5251) and I am looking for a quicker way than using a half round file!
So far I have been cutting a round hole then using a carbide burr in a die grinder.
The problem with this is the grinder tends to "grab" every now and again. Aside from hurting my self I am damaging the sheet when the burr picks up.
I tried using a stone rather than a burr but it's a lot slower and the stone clogs up quickly.
Air nibbler is finding 3mm to thick.
My next plan is to mount a router upside down and try moving the sheet rather than moving the tool but I can see that causing a lot of blood loss and a problem with clearing the chips away.
I am also thinking of gluing the sheet to a piece of wood or clamping it between 2 sheets of wood and using the router as you would normally?
Just wondered if there is a sensible way that I am missing?
So far I have been cutting a round hole then using a carbide burr in a die grinder.
The problem with this is the grinder tends to "grab" every now and again. Aside from hurting my self I am damaging the sheet when the burr picks up.
I tried using a stone rather than a burr but it's a lot slower and the stone clogs up quickly.
Air nibbler is finding 3mm to thick.
My next plan is to mount a router upside down and try moving the sheet rather than moving the tool but I can see that causing a lot of blood loss and a problem with clearing the chips away.
I am also thinking of gluing the sheet to a piece of wood or clamping it between 2 sheets of wood and using the router as you would normally?
Just wondered if there is a sensible way that I am missing?