BOOSTER REPAIR SLEEVE DIMENSIONS

[elmacgyver0]

Cool! and you still have your $150.00!

[Bil]

Looks good! I see you have put in the relief for the barrel angle,that was subject of a thread here.Does the bushing work ok with the rounded slots? Thanks. ---bil

[haseo8up]

looks good! I bet it will work just fine.

[jet489]

thanks guys.

bil, it works fine with the rounded slots. i made one of the slots smaller than the others so
the barrel bearing would only go in one way.

[johnnymg]

Hey Jet did you make the main body of the piece any larger? I was thinking when I turn mine that I would make the body approx .020 larger in dia. to compensat for the missing rec. section that was demilled and make just a small step on it to fit the rec. front or just enlarge the rec. opening to fit the repair piece without a step. With a larger dia. making the slots would be easier as more material to go deeper with the end mill without fear of coming thru the side?? Any thoughts?

[SHARPSSHOOTER5090]

Have you ever tried to put a square nose tool like a cutoff tool in your lathe tool post positioned inline with the spindle and clampe on its side so the cutting face is to you. Lock your spindle in back gear if you hve one or shift it into the slowest speed you have. Rotate your booster with the slots premilled like you have got them and use your carraige in and out by hand as a shaper / keyway sloter. (DONT TURN ON THE SPINDLE ROTATION!!!) Take very small cuts by feeding out with the cross slide and you can square up the slot. Rotate the part 90 degrees and cut the square corners in the next pre formed round slots. I have done this many time to make a internal keyway on my lathe. You could use a milling machine to do the same thing by putting a square nose tool in the quill and moving the quill feed up and down. (AGAIN, DON'T TURN ONTHE SPINDLE ROTATION!!)


(Bil, I was purposlly shouting about not turning on the spindle rotation.)

[jet489]

sorry for the wait, ive been working on other projects lately and havent had much time to
work on the computer.
johnnymg- i may have to try that.

sharpsshooter5090- i recall in another thread(i though they were gona make it a sticky but i dont see it) where a member did this with the quill handle but i never thought about doing it with the carriage, ill have to try it when i get time.

[turbothis]

hey jet, i would like to buy the bushing with just all the outer cuts and the inside diameter, i dont need the slots. what would it cost?????

[nutsrusted]

SHARPSSHOOTER,

That's a perfectly expectable way to do keyways on a lathe. I read about this method many times but haven't tried it. The problem in cutting blind square keyways is you have to drill a hole on the blind side of the keyway or the cutter will bind up. No way to get a hole drilled on inside wall.

I think they use EDM to create internal 'blind' keyways. If you guys have any ideas please share.

If a round keyway is acceptable than I would stick with that. You may be able to square the round keyway up afterwards using your method.

Great job on the part JET. I'm going out to the garage to look for a piece of CRS to try out.

[johnnymg]

also slot inside with a woodruff cutter for clearance instead of drilling hole for chips to clear??

[elmacgyver0]

I made my own bearing also. Seemed to turn out pretty well, kind of crude on my slots, but the barrel bushing fits it well and slides freely. I did get my diameter of the part that goes in the shroud a little loose, I wanted a tight press in fit, but it slides right in. Oh well its going to be welded in place anyway. Still need to grind the relief on the one side for when the barrel tilts out. My threads turned out great, which is surprizing because I am not that great of a machinist.
I used a HF 9X20 lathe and a HF drill/mill the one that is basicly a drillpress with an x/y table for a base. My slots are relitively square. I hand scraped them and used needle files and a dremel with a diamond burr. Many ways to skin a cat, but this definitely was not the easyest way.