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Best method of boring a bearing housing

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MalcB	19/05/2015 11:13:22
257 forum posts 35 photos	Yeh I know what you mean on the ER screw collet chuck. I am using a MT3 x ER40 that I transfer from the Miller to my now Boxford with M12 drawbar. Blind hole but I get about 55mm depth in the collets.
Jon Gibbs	20/05/2015 08:00:06
750 forum posts	Sorry, another dumb question coming up.... Having made the boring bar, what grind for the 6mm HSS round toolbit to cut steel please? The toolbit is stuck out at right angles to the bore. Many thanks in anticipation Jon
JasonB	20/05/2015 08:07:15
25215 forum posts 3105 photos 1 articles	Look at this and the next few photos, OK if boring right through.
Jon Gibbs	20/05/2015 08:38:39
750 forum posts	Thanks very much Jason - Brilliant. Even I ought to be able to follow that. Jon
Jon Gibbs	18/08/2015 19:53:02
750 forum posts	Well, here's the postscript. Finally managed to finish assembling the hollowing rig and here it is... ...and here's a close-up of the articulated section with the taper roller bearings.... I haven't had time to test it on some real hollowing yet which'll have to wait until I get back from a business trip but I'm pretty chuffed how it turned out. Thanks for the guidance to get the boring done properly! (Apologies for the clutter in the background). Jon Edited By Jon Gibbs on 18/08/2015 19:54:18

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