Mandrel wobble in the middle

[EStreet]

Drill rod has the same problem. It's diameter vs length. Everything flexes to a degree. This is why the adjustable length mandrels are superior to the rest. They fled the least when you only have one tube on the mandrel.

 

[Penpal]

All I have done for ever it seems is halves or short one piece. From the first pen I watched guys supporting the blank in the mandrel dismissed that right away. As well as point to the end of the mandrel.

Peter.

 

[loftyhermes]

Miles,
If you want to pop over to Warsop sometime I'll show you the way I do things. It might help you sort out your problems.
Steve

 

[Midnight_Turner]

Miles,
If you want to pop over to Warsop sometime I'll show you the way I do things. It might help you sort out your problems.
Steve

Just need to get away from the kids for 5 minutes!! Thanks Steve


Sent from my iPhone using Tapatalk

 

[21William]

If you're doing anything other than slimlines then you can increase the diameter of the shaft. I chose 7mm which takes a bit more bending than the 6.25mm ones. The American "B" size mandrels are even fatter at just under 7.4mm. You just need to drill or ream the bushes to suit.

 

[wm460]

If you're doing anything other than slimlines then you can increase the diameter of the shaft. I chose 7mm which takes a bit more bending than the 6.25mm ones. The American "B" size mandrels are even fatter at just under 7.4mm. You just need to drill or ream the bushes to suit.

Great idea William, I have a couple of B mandrels I have never used.

 

[Burt25]

I had the same problem with my evolution Mandrel - I checked it on the ground flat bed of my Bandsaw and it was slightly bent. I contacted Axminster and they sent me a replacement with no questions. The replacement shaft has been 100%

 

[Bill Mooney]

When I turn a two piece pen I only ever turn one piece at a time & I use a mandrel saver to give a short shaft. It keeps vibration down & lessens the chance of bending the shaft.

 

[Buckeye]

When I turn a two piece pen I only ever turn one piece at a time & I use a mandrel saver to give a short shaft. It keeps vibration down & lessens the chance of bending the shaft.

Exactly what I do, it makes so much sense

Peter

 

[Dalboy]

When I turn a two piece pen I only ever turn one piece at a time & I use a mandrel saver to give a short shaft. It keeps vibration down & lessens the chance of bending the shaft.

+1 Bill that is what I do also

 

[Penpal]

From nearly day one my philosophy.

Peter.

 

[fortress]

I only ever turn one piece at a time, and now I turn between centres with live and dead cone centres, I find it's much better and everything runs much truer. The only downside is you can't get the tool rest as close as you would like, could do with a two inch tool rest.

 

[EStreet]

Says who?

 

[fortress]

Oh I say......nearness is nice.

 

[21William]

That's a strange looking tool rest, why is it notched?

 

[Penpal]

Six scalps,six plastic, six wood, six,workshop pencils. No a seriously quick way to measure for different pens.

Peter.

 

[EStreet]

Indeed. It's a reference for measure

 

[wm460]

Says who?

I like your live centre ED is that a custom made one?

 

[EStreet]

Nope. That's stock from grizzly.

 

[21William]

Nope. That's stock from grizzly.

It's quite long, not seen that style over here.