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Rebuilding a benchtop drillpress.

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websterz:
Well, time and courage I have. At this time I lack a tailstock for my rotab. It's on my list of things to build. In fact it was number 2 until the drillpress project trumped it. I will try the drill/tap/mill method and see how I fare. If I can't get it to work I will set it aside and get a tailstock built so we can do it the proper way.  :thumbup:

And I will provide pics and a write-up of the first go.

bogstandard:
Thats fine. The offer will still be there, as long as I am.

Bogs

websterz:
A few pics of the drillpress project.

Here are a couple of shots of the base and head. The little press wasn't in bad shape at all, just neglected.





I started out with a piece of 1/2" drill rod and cross drilled and tapped 8 1/4-20 holes. A little trick I discovered is to use a ratchet and socket to drive the spindle...makes the mill into a lovely tapping fixture.



Then I went to the lathe and turned the drilled/tapped section down to .370, a nice slip fit in the splined drive hub. The other end got turned to .470, a light press fit for the 2 spindle bearings. Then I LocTite'd in 8 setscrews that will be milled down tomorrow to form the new splined. I ran them thru quite a bit past half-way so that I can be sure I mill down to solid faces and don't leave any hex holes in the ends.



I was going to go with smaller screws and more of them, but I figured that more holes would just weaken the shaft without gaining anything in trade. I will have a minimum of 6 pins in contact with the drive hub at any given moment, should be strong enough. All I plan to use the press for is very light duty drilling.

When I finish milling the screws down I will go back to the lathe, dial in the shaft, and drill a 3/8-24 hole in the other end for mounting a little chuck. I got roped into helping my wife paint tomorrow so it may be a couple days before I get to finish the project. Why does work always get in the way of my fun?  :bang:

Bernd:

--- Quote from: websterz on May 27, 2009, 07:42:44 PM ---Why does work always get in the way of my fun?  :bang:

--- End quote ---

I have the same problem. When you figgure it out let me know.  :)

Bernd

P.S. that shaft is looking like a porcupine. Looking good though. Hope it works.

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