Electronics > Projects, Designs, and Technical Stuff
Square holes on aluminum.... how do you do it?
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beanflying:
Still better to move to something with a lower flash point just in case. Mineral Oil (Baby Oil) or Kerosene (plenty of others but these are easy to get) would be safer options. It would need a wipe over post Milling but your eyebrows will still be in place.

I still like the Nibbler for odd awkward jobs, iron filings in the PC build wouldn't work to well  ;)
Renate:
Some of the Dremel tools are ok for steel, but they are lousy for aluminum.
I bought a few expensive 1/8" 2 flute fancy coated end mills from McMaster.
I had to make a jig to cut radiuses on some 1/4" x 1" aluminum.
Dremels are not too good a choice as you really can't do constant speed, only constant power.
Still, if you control the speed (and the chatter) they can be handy.

Slightly off subject, plastic drills! I love them!
No, they are not plastic, they are steel.
They have a 0° rake so they don't dive through your little plastic box leaving a mangled hole like a butterfly.
Don't use them for anything but plastic.
Hmm, I can't even find the brand I bought.
Here's another brand: https://www.tapplastics.com/product/supplies_tools/plastic_tools_supplies/tap_plasdrill_bits/161
beanflying:
Interesting I didn't know you could by zero rake drills  :-+ Quick check on Amazon turned up this set Norseman Drill Set Now do I 'need' as small set and where are the Metric ones :palm:

On Rake angle I have been looking at getting a zero rake Saw blade for my tracksaw for Acrylic and Aluminium for a T Slot build I have coming up but I am making do with the thin kerf Plywood blade for breaking down Acrylic sheets for my Laser and doesn't chip.
tautech:

--- Quote from: beanflying on March 04, 2020, 12:49:40 am ---On Rake angle I have been looking at getting a zero rake Saw blade for my tracksaw for Acrylic and Aluminium for a T Slot build I have coming up but I am making do with the thin kerf Plywood blade for breaking down Acrylic sheets for my Laser and doesn't chip.

--- End quote ---
Crosscut blades have entirely different rake to ripping or combo blades....go down that rabbit hole.  ;)
beanflying:

--- Quote from: tautech on March 04, 2020, 12:55:58 am ---
--- Quote from: beanflying on March 04, 2020, 12:49:40 am ---On Rake angle I have been looking at getting a zero rake Saw blade for my tracksaw for Acrylic and Aluminium for a T Slot build I have coming up but I am making do with the thin kerf Plywood blade for breaking down Acrylic sheets for my Laser and doesn't chip.

--- End quote ---
Crosscut blades have entirely different rake to ripping or combo blades....go down that rabbit hole.  ;)

--- End quote ---

I have both already the saw came with a Rip/Combo blade and I added one of these https://www.bunnings.com.au/diablo-165mm-6-5-40-teeth-fine-finish-cordless-circular-saw-blade_p6370899 for Ply and Panel working great so far only runs a shallow rake.
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