posted
Blake - we cut at about 150 inch/minute at 12,000RPM using either a 1/4" or 1/8" end mill bit (straight O type) depending on the size of the letters/shape.
If the material is 1/8" thick we cut in one pass, if thicker we cut in two passes just for safety sake.
Also, if the letters are small, we apply double stick carpet tape to the back, as well as screwing the piece down to the table, so that the dust collector won't suck up the little letters.
If you have a vacuum hold down system, the tape isn't necessary.
-------------------- Chapman Sign Studio Temple, Texas chapmanstudio@sbcglobal.net Posts: 6306 | From: Temple, Texas, USA | Registered: Nov 1998
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posted
I use a Belin up cut spiral O flute #33635. I can't compare it to an Onsrud because it's the only one I use but others have told me it's the best for cutting aluminum composites like Alumalite and DiBond. I've cut a lot and it's still crazy sharp. Produces a very clean cut but small stuff may need extra help to hold em down with the up cut bit. 12000 rpm at 120 to 150 IPM.
-------------------- Dave Sherby "Sandman" SherWood Sign & Graphic Design Crystal Falls, MI 49920 906-875-6201 sherwoodsign@sbcglobal.net Posts: 5397 | From: Crystal Falls, MI USA | Registered: Apr 1999
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