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Pen mandrels

N

noz

Apprentice Member
Joined
Oct 10, 2016
Posts
2
Location
doncaster
First Name
michael
Has anyone checked the accuracy of their mandrel? I tried mine with a dial gauge and it was miles out!!
I ended up throwing it away and made my own using an old 2 morse taper drill and a bit of round rod. I am lucky in that I have an engineering lathe as well as a wood lathe but I wonder whether I was just unlucky or not.
 
Penpal

Penpal

Grand Master
Joined
May 26, 2013
Posts
25,342
Location
Canberra AUSTRALIA
First Name
Peter
Mandrels can be trued with your knowledge of your metal lathe no biggy. Choose between centres make your own spacers etc. Problem solved.

Peter.
 
21William

21William

Fellow
Joined
Jan 21, 2016
Posts
1,629
Location
Dorset
First Name
William
I made my own setup with a cheap Chinese collet chuck, some 7mm silver steel and a mandrel saver from Chronos. No bends so far.
 
Penpal

Penpal

Grand Master
Joined
May 26, 2013
Posts
25,342
Location
Canberra AUSTRALIA
First Name
Peter
21William said:
I made my own setup with a cheap Chinese collet chuck, some 7mm silver steel and a mandrel saver from Chronos. No bends so far.
Click to expand...

How did you bring the 7mm down to 6.22mm for the mandrel? Easier to buy machine bolts taking a brass tube as a guage, select the ones with short threads at the end

Peter.
 
rayf6604

rayf6604

Registered
Joined
May 1, 2014
Posts
2,726
Location
Narrowboat dweller Willington, Derby
First Name
Ray
Penpal said:
How did you bring the 7mm down to 6.22mm for the mandrel? Easier to buy machine bolts taking a brass tube as a guage, select the ones with short threads at the end

Peter.
Click to expand...
I made my own mandrel using some 1/4in steel and I used 120 grit and sanded it down to the right diameter on the lathe. Terry put me onto this method. It worked even though it took a while.

Sent from my SM-G928F using Tapatalk
 
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