ScrapMaker
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- Mar 22, 2009
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Hi all,
first post here, been lurking for a while but now I need some help!
Bought a used mill not so long ago, just got round to setting it all up.
First of all I put a dial indicator into the chuck, fixed the quill and put a setup block underneath it, zeroed the indicator.
I started at the left side, then done the same for the right side, over the 14" of travel, it moved by one thou, pretty good I thought.
Next came the vice, made sure it run parallel to the spindle, then run over a dial test indicator along the fixed jaw, and jaw base.
All of these measurements came in to under a thou. All was well, or so I thought.
Installed a fly cutter, one pre mounted into a morse taper. Setup a piece of Ali into the vice on a pair of parallel bars,
tapped it down and then tightened the vice a little more. Touched off the fly cutter on the surface and brought the quil down 10 thou.
All was going well with an excellent finish, working from right to left, then when the tool came in contact with the ali on the return stroke
after 3-4 inches of cutting so far) the tool started to cut again, and a step was machined.
Not being one to give up, I tried another fly cutter in a collect chuck, with the same result.
With everything being clocked to within a thou, is there any reason why I am getting a step between both sides of the cut?
Thanks
ScrapMaker
first post here, been lurking for a while but now I need some help!
Bought a used mill not so long ago, just got round to setting it all up.
First of all I put a dial indicator into the chuck, fixed the quill and put a setup block underneath it, zeroed the indicator.
I started at the left side, then done the same for the right side, over the 14" of travel, it moved by one thou, pretty good I thought.
Next came the vice, made sure it run parallel to the spindle, then run over a dial test indicator along the fixed jaw, and jaw base.
All of these measurements came in to under a thou. All was well, or so I thought.
Installed a fly cutter, one pre mounted into a morse taper. Setup a piece of Ali into the vice on a pair of parallel bars,
tapped it down and then tightened the vice a little more. Touched off the fly cutter on the surface and brought the quil down 10 thou.
All was going well with an excellent finish, working from right to left, then when the tool came in contact with the ali on the return stroke
after 3-4 inches of cutting so far) the tool started to cut again, and a step was machined.
Not being one to give up, I tried another fly cutter in a collect chuck, with the same result.
With everything being clocked to within a thou, is there any reason why I am getting a step between both sides of the cut?
Thanks
ScrapMaker