https://youtu.be/hqgs9zM1WjE
Hello. Recently I've had problems with a cheap manual mill I bought for my workshop. I wasn't able to fit MT4 tools - these didn't want go deep enough so the taper fits properly. Check out how I solved the problem. What do you think of this solution? Maybe it will give someone an idea how to deal with such issue.
I did something similar to covert an R8 mill spindle to an ISO 30 taper. I rotated the head to half the included angle and bored the spindle using the vertical table/knee feed. It would not work using the quill feed, that would just bore a parallel hole regardless of the angle.
It is important that the tool edge is set on the centreline, the equivalent of setting tool height on a lathe.
This method ensures good concentricity, better than removing the spindle and cutting the taper in a lathe where there will always be some runout.
The same technique can also be used to repair a damaged R8 taper.
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Thanks GBWM! We've added your Mill Spindle Modification to our Milling category,
as well as to your builder page: GBWM's Homemade Tools. Your receipt:
<div id="blocks"> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/homemade-mill-spindle-modification"> <img src="/uploads/255274/homemade-mill-spindle-modification.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/homemade-mill-spindle-modification">Mill Spindle Modification</a> <span> by <a href="https://www.homemadetools.net/builder/GBWM">GBWM</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/mill'>mill</a>, <a href='https://www.homemadetools.net/tag/spindle'>spindle</a>, <a href='https://www.homemadetools.net/tag/modification'>modification</a> </div> </div> </div> </div>
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That had to be an interesting operation. Do you have any video of the process?Quote:
Originally Posted by tonyfoale
No video nor photos and I do not even have that mill now.Quote:
Originally Posted by GBWM
That's unlucky. But thanks for sharing the idea!Quote:
Originally Posted by tonyfoale
Use WD40 or kerosene when cutting aluminum
Sometimes I use WD40. Is kerosense any better than WD40 or the effect is similar?Quote:
Originally Posted by TrickieDickie
TapMagic is great on Aluminium. WD40 also have a dedicated fluid for machining in addition to their traditional (W)ater (D)ispersant 40.Quote:
Originally Posted by GBWM
Would stay away from WD40 for anything with enough cutting-force to create smoke...Quote:
Originally Posted by GBWM
When I started out I used it and fairly frequently I would get these crazy heart-palpitations with my heart beating at a mile-a-minute and so hard I could properly feel it when I put my hand on my chest, stopped using WD40 and it went completely away...............
So it would appear that once you heat WD40 past it's smoke-point some kind of CNS active compound is created............