CNC Router Aluminium surfacing

[cropwell]

Hi

Can anyone recommend a surfacing bit for aluminium? Its only for a hobby cnc with a kress spindle.

Do you want flatness or finish ? to put a surface pattern I use a dremel wire brush, the lowest spindle speed and WD40 (otherwise it drags the ali and messes the finish). I use a pocketing cut at a fairly high feed rate and 0.2mm DOC. The dremel brush must be the genuine one like these DREMEL Multipack Accessories 443 3 x 3.2mm Carbon Steel Polishing Brush Pack 3. If you spin it too fast it splays out and is useless from then on.

For a flat surface - yes the 6 or 8mm HSS uncoated cutter from ArcEuro, when they have them.