Mistake

[justin1]

I have very little practical experience. All help is appreciated

That's the beauty of this forms there is very wide range of skill sets and knowledge.

We all start somewhere. And we all have made some mistakes along the way and if someone says there perfect I would be skeptical lol.

 

[YYCHM]

I am trying to make a 'thumper'. Something I can use to dislodge the MT3 from my mill without ruining all the brass stock that I have.

I thought one uses a wedge key to dislodge MT tapers on a mill. @David_R8 you had a MT spindle mill?

 

[DavidR8]

I thought one uses a wedge key to dislodge MT tapers on a mill. @David_R8 you had a MT spindle mill?

Wedges are used when there's no drawbar like on a drill press.

 

[YYCHM]

Wedges are used when there's no drawbar like on a drill press.

Did your mill have a drawbar?

 

[DavidR8]

Did your mill have a drawbar?

Sure did. It also had slots in the spindle to use wedges on a drill chuck arbor.

 

[Susquatch]

My mill drill had an mt3 spindle and a drawbar. No place for wedges.

 

[YYCHM]

Sure did. It also had slots in the spindle to use wedges on a drill chuck arbor.

Did you not use the wedge to dislodge MT collets as well?

 

[whydontu]

Other option is pewter, most pewter stuff you can find at thrift stores will be low or no lead, so safe and very easy to melt and cast. I melt it on a single-burner electric hot plate.

 

[mbond]

I have two different draw bars as well as a wedge

 

[YYCHM]

My mill drill had an mt3 spindle and a drawbar. No place for wedges.

So how do you get the tool holders out of the spindle?

 

[mbond]

and six months ago i had no machines at all.

 

[YYCHM]

I have two different draw bars as well as a wedge

So what do you need this 'thumper' for?

 

[Susquatch]

So how do you get the tool holders out of the spindle?

You undo the drawbar a few threads and then hit the top of it with a hammer (or in my case a plastic sledge). Same as R8 but a bit more stubborn.

 

[Susquatch]

So what do you need this 'thumper' for?

See my last post

 

[YYCHM]

See my last post

Ok, I get it now. He needs heavier mallet/hammer....

 

[Susquatch]

Ok, I get it now. He needs heavier mallet/hammer....

Yes, but no. Doesn't really need to be heavier. My plastic mallet works better than my brass one. It's all in the quality of the "thump"..... LOL!

 

[DavidR8]

Did you not use the wedge to dislodge MT collets as well?

No as they were on a drawbar. Loosen a few threads and give it a whack, presto.

 

[PeterT]

Also check out dead blow hammers. That's kind of what they are all about, thump force but with less rebound. Constructed differently than regular hard body tipped hammers.

 

[fixerup]

I have got to try a plastic hammer or a dead blow hammer. My MT2 spindle is a real bugger to remove any MT2 arbor I stick in there. Everytime I hit the draw bar with a hammer I worry I will damage my spindle bearing.

 

[PeterT]

There is probably a recommended torque rating out there but I try not to over tighten. It can suck the collet or arbor in tighter than it really needs to be, which just makes it difficult to remove. Bang-Bang removal is probably not great for the threads or the bearings. So tight enough so tool wont spin or loosen & just a teensy bit more. The way I stumbled onto this was occasional hand tightening & forgot to wrench obviously not paying attention. But I'm sure if it was heavier cutting I may not have gotten off as easy. My spindle is R8 so might be a bit different to MT. I use a Milwaukee cordless driver & socket on my drawbar, more as a reach convenience, but another plus is you can set the clutch torque & be somewhat consistent.