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07-12-2012 #1
Had a strange one or may be two today, first I put a sheet of 15 mill ply on the bed and did a 300 x 200 area clearance @ 5mm. All went fine no problems, until I put in an engineer square and it was out over the 200 length by 3mm! I took off the ply and put in a block of 200 x 250 @ 15 mm and did a profile 5mm in, all-round the edge of the block @ 5 mill deep, using the front of the bed to square up the material. The first time I did it at normal 72 feed it seemed to stick on the y axis (the bed moving Forwards toward me), then there was a sort of small bang and it went off again. The spindle returned to the origin and it was 6 mm off along the y axis. I reset and flipped the blank then dropped it to 60% feed rate, restarted the job. This time it ran perfect and all the angles on the job where correct, any ideas what’s going on?
Fiction is far more plausible when wrapped around a thread of truth
Nothing great was ever achieved without enthusiasm.
Ralph Waldo Emerson
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