- Thread starter Kram
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Most folk just call me; Orange Joe
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Looks like a nice lathe job, turn the outer profile and bore out the centre, then it just needs cutting in half and the half a hole filing out to a triangle.
Kram
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Yes that may have been a good idea, cut two halves and bore out together, but I did t see your message and dont have the chuck fitted on lathe and Im very lazy about swapping it.
It would greatly help to measure correctly. I had ignored the gap on the original clamp
Marked out for the next attempt. I may have to chuck them up in lathe as an intermittent wont be a problem in alu.
It looks way bigger...
Guineafowl
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This shaft from my grain mill used to run in a steel bush (shown in front).
There was quite a bit of wear as it‘s the drive pulley end. Bored out a recess and fitted a bearing instead. Good practice with the 4-jaw chuck.
There was quite a bit of wear as it‘s the drive pulley end. Bored out a recess and fitted a bearing instead. Good practice with the 4-jaw chuck.
oldbikedavey
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EN.24T cylinder head bolts in 3/8 -16 UNC for a BSA A.10 Super Rocket..
'cause some joker helicoiled the front outside barrel threads thus..
Someone's got to do it, and it's very obviously going to be me...
'cause some joker helicoiled the front outside barrel threads thus..
Someone's got to do it, and it's very obviously going to be me...
Dr.Al
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Windy Miller
Semi-Professional Potterer!
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Do you have a link for that?
I need to get some new boring bars. My little 8mm one is just too springy.
Hood
I am obsessed.
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Started on another roller today, turned a 45mm dia hole into two bits of 250mm dia x 16mm thick 316. Turned down two bits of 50mm dia 316 to 45mm for the first 16mm, pressed them in into the plates then welded. Tomorrow I will turn down the OD of the plate to 119mm and then a step of 8mm to 112mm and press it into some 8" NB Sch10 pipe and weld it up.
I think I have the same bars but don't think I have got any tips for them yet. Lol
Kram
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Yes but for boring steel its important the inserts work well, I found it difficult to get good ones to suit boring and the ones above were luck.
I have a spare one I rarely use - the DCMT inserts I have dont work particually well at the different angle it uses. I'll get a photo if your interested, its a Korloy C08K-SDQCR-07.
The good ones above are SDUCR which is excellent with that style of single edge chip breaker. The APT inserts are not available anymore tho I have a few spare if you do get a SDUCR I can send a few, they last a long time.
I have one of these, min bore about 10mm. cCMT inserts
However the 8mm is probably same min bore so get that instead
Or SDUCR07 /11 like my ones above.
Remarkable coincidence you just posted these.
I may wish to enlarge/destroy a 16mm threaded hole to say 18 or 20mm. Very hard steel. Carbide would do it. Have you seen the price of solid carbide end mills or drills
Would one of these be up to the job?
Kram
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You dont need a carbide bar just any insert bar with a carbide tip unless its very deep, but yes they will.
12mm has a min bore of 16mm.
Carbide bars advantage is the rigidity. My 20mm bar in the pic above I can use at full stickout with little increase in vibration...
12mm has a min bore of 16mm.
Carbide bars advantage is the rigidity. My 20mm bar in the pic above I can use at full stickout with little increase in vibration...
Seadog
Save the planet. It's the only one with rum!
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Ah, that makes more sense than your Insta post
