POTD- PROJECT OF THE DAY: What Did You Make In Your Shop Today?

ChazzC said:
Grainger has surprised me a couple of times on stock: pricing about the same as Online Metals but no shipping if I pick it up (and many times drop shipped to my Grainger branch from Online Metals). I use mostly short lengths so I have also found McMaster a good source if 1’ lengths will work - like your example shipping doesn’t change much with additional items, only if the length goes up.
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Grainger is 45 minutes away. McMaster was twice the price, almost HD price. Stock Car Steel more expensive, so online is the winner right now.
zoro stock comes from online steels. Zoro's web filtering for raw stock sucks too.
 
Made a pair of tight slip fit bungs for a pair of open ended arbors.. One on my multi-tip live-centre, one on my RoHm 1/2" chuck.

The end of the drill arbor already has a drop of loctite in the end as the first bung was undersized and needed to be made slightly larger diameter. Since cleaned out and the new bung fitted.

If the heads of the bungs look a little mauled, that is because once they were driven home and the loctite had set I tried pulling them out by trapping the head of each bung in my vice to prove they were in there properly. A nice very-tight push fit with loctite as additional security and they are going nowhere anytime soon.

At least now they eject from the tailstock without recourse to using my "persuader" copper/hide mallet!

This job falls under the "make it work without spending money by using scrap material" umbrella. Only took half hour to make both and the CCGT insert did a grand job on the EN3B!

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GrifterGuru said:
Made a pair of tight slip fit bungs for a pair of open ended arbors.. One on my multi-tip live-centre, one on my RoHm 1/2" chuck.
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Are the tool holder shanks internally threaded for a drawbar?
 
extropic said:
Are the tool holder shanks internally threaded for a drawbar?
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@extropic

They are, though for what purpose there is a drawbar thread on a T/stock only live centre is beyond me, ever more so since it is machined as part of the main body.

The 1/2" chuck arbor, however, is understandable since that was a separate purchase to the chuck but I have no intention of using a drawbar on it.

I would rather be able to eject them easily from my t/stock and not resort to using a mallet to remove them every time I swap between live centre, drill chuck or other t/stock tooling. That is just asking for problems.

Apart from that, the bungs are easily removable with a few minutes, or less, effort.
 
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GrifterGuru said:
@extropic

They are, though for what purpose there is a drawbar thread on a T/stock only live centre is beyond me, ever more so since it is machined as part of the main body.
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Those tool holders are intended for use in a mill spindle, therefore a drawbar is appropriate.

I would extend (add a functional equivalent of a tang to) a milling machine Morse taper tool holder by modifying a purchased threaded fastener.
But that's me. YMMV
 
extropic said:
Those tool holders are intended for use in a mill spindle, therefore a drawbar is appropriate.

I would extend (add a functional equivalent of a tang to) a milling machine Morse taper tool holder by modifying a purchased threaded fastener.
But that's me. YMMV
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@extropic

With all due respect, how is a live centre of any use in a mill spindle? it is not like the tip would do anything.

As for the drill chuck arbor, I have no intentions of using it with anything but the lathe t/stock. I don't give two hoots as to what the thread is for, I just need the thing to eject from the T/stock without using a mallet to knock it out.
 
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