titanium

[cterrymachine]

i have to make some washers out of titanium ,they are .095 thick,and .850 dia,.550 thru hole,starting from 1" stock,never machined this stuff, im told it can be tuff,any sugestions,thanks

[kalmah]

Use 12mm or 0.5" end mill on uncoated carbide. Don't try to work dry. Use emulsion oil

Vc = 50m/min
fz = 0.01 x D (mm)
ap = 1xD
ae = 0.25xD

If you use cutting oil, pay attention in fire. Titanium chip can burn your oil.

I've soon set fire in a manual machine tool, that's why I don't like machine this material with cutting oil, especially if I use large depth of cut.

[mxtras]

All the the TI I have cut machines very much like 6061 aluminum but as mentioned, the chips can light up pretty quickly. If the chips are fine, they will light up like steel wool only brighter - much brighter. Keep the chip pan cleaned out and have the appropriate fire extinguisher (type D for flamable metals) handy for the just in case.

Scott