OK guys here's where I'm at... I need to make a sleeve to adapt one part to another, and I have the O.D. spot on for a 0.001 in. press fit between the two pieces and have moved to the interior dimension. Interior needs to be bored to 0.661 in. I.D. for a length of 0.998 in. minimum. The O.D of the sleeve is 0.689 in. so the wall thickness will be 0.028 in. when finished. I'd rather get the boring done while everything is dialed in right now VS. try to swap ends and set up again, but my current boring bit won't reach deep enough to do the job. Here's the boring bit...
https://littlemachineshop.com/products/product_view.php?ProductID=1968
It will only reach in up to the step where the shank squares, just no clearance to keep it centered on the inside of the bore and let the square shank pass thru.
Here's the problem...I have an Atlas 10100 Mk.2 lathe with the lantern tool post & tool holders that take the 1/4 in. square tool bits. The boring bit that came in the beginner's set of tool bits from LMS just isn't quite long enough to reach the 0.998 in. depth, it falls short by 0.100 in. I currently have a 0.50 (1/2 in.) drilled hole (1.100 in. depth) started but can't go any farther since my drill bit selection is pretty limited (1/2in. is largest drill bit I have).
So does anyone have an idea on where to pick up a longer boring bar similar to the one in the LMS link I posted above that will fit the Atlas 10100 Mk.2 tool holders for the lantern tool post ?? Or is there something I'm overlooking being that this is my first time ever trying to use the boring boring bar inside a drilled hole where I can't see what's going on ?? I *REALLY* don't want to take the work piece out of the 4-jaw chuck and try to set it up to bore it from opposite ends as my inexperience may introduce a screw-up. As it sits in the lathe right now the O.D is perfect, but as it approaches the finished dimensions the wall thickness will drop to 0.028 in., hence the reason I don't want to remove & try setting up again. If I can get the correct length boring bit I can finish out the I.D. and part off the piece I need with everything (hopefully) staying to spec. Thanks.
https://littlemachineshop.com/products/product_view.php?ProductID=1968
It will only reach in up to the step where the shank squares, just no clearance to keep it centered on the inside of the bore and let the square shank pass thru.
Here's the problem...I have an Atlas 10100 Mk.2 lathe with the lantern tool post & tool holders that take the 1/4 in. square tool bits. The boring bit that came in the beginner's set of tool bits from LMS just isn't quite long enough to reach the 0.998 in. depth, it falls short by 0.100 in. I currently have a 0.50 (1/2 in.) drilled hole (1.100 in. depth) started but can't go any farther since my drill bit selection is pretty limited (1/2in. is largest drill bit I have).
So does anyone have an idea on where to pick up a longer boring bar similar to the one in the LMS link I posted above that will fit the Atlas 10100 Mk.2 tool holders for the lantern tool post ?? Or is there something I'm overlooking being that this is my first time ever trying to use the boring boring bar inside a drilled hole where I can't see what's going on ?? I *REALLY* don't want to take the work piece out of the 4-jaw chuck and try to set it up to bore it from opposite ends as my inexperience may introduce a screw-up. As it sits in the lathe right now the O.D is perfect, but as it approaches the finished dimensions the wall thickness will drop to 0.028 in., hence the reason I don't want to remove & try setting up again. If I can get the correct length boring bit I can finish out the I.D. and part off the piece I need with everything (hopefully) staying to spec. Thanks.