Can anyone recommend a good router bit/feeds/speeds for routing sintra? I'm using a Porter Cable 3 1/4hp router on my CNC and I would like to get the best edge quality I possibly can as the client is a theme park. I did a part run and had a lot of trouble with re-welding and some chattering along the edge. Any help would be greatly appreciated.
From contributor F:
An Onsrud bit for acrylic will work fine (1/4" upcut o-flute for acrylic). Actually, a lot of cutters will work fine. Sintra is about as easy as it gets - however, how thick are you cutting? If the cut is too deep in one pass (over 3/8") then re-welding might be a problem. Try a 2 flute upcut solid carbide metal cutting bit if you can't get the Onsrud or similar quickly. I don't go any higher than 200 IPM for feed rate, and even that depends on the smoothness of your machine.