Hi,
I spent quite a bit of yesterday cutting the propeller holes in an Aluminium spinner. For the uninitiated these spinners are around 1/16th of an inch thick in ally that's about as hard as it gets, idk why. They're not a particularly convenient shape to hold securely which is why I prefer to use the dremelloid.
Anyway, I've tried multiple ways in the past including hacksawing then filing, dremelling with a sanding drum, and so on. At the LME a few weeks ago I managed to pick up a couple of small carbide "slot mills" suitable for the beanqueue dremelloid and so I tried these. They are the type that have multiple teeth spirally arranged around a 2.5mm (ish) cutter with a 3mm shank to fit the collet. They work great for a few seconds but clog almost immediately and cease to cut, so I am back where I started.
The obvious way of doing the job is to buy a piercing saw and then file back to final shape afterwards, but I just thought someone might know a way to stop my carbide cutters clogging, or else know of a different type of cutter to try ? Or failing that, a sure fire method of performing this tedious and irritating job with the minimum of frustration using hand tools ?
Thanks in advance,