• We invite you to join UKWorkshop.
    Members can turn off viewing Ads!

Longworth style bowl chucks - any experience?

UKworkshop.co.uk

Help Support UKworkshop.co.uk:

minilathe22

Established Member
UKW Supporter
Joined
31 Jan 2016
Messages
403
Reaction score
75
Location
Stevenage, UK
Hello everyone

I currently do not any reversing jaws for my chuck, for holding a completed bowl and finishing off the base, remove tennon etc. I was debating buying a set of the 4 large quadrant style jaws with rubber buttons, and then I came across this in a few places:

longworth-chuck.jpg


Its called a Longworth style chuck, on the back it as a dovetail for mounting into 50mm chuck jaws. It looks like it would be much easier to use, but some of the reviews online are not so good.

Does anyone have experience of using these?
 

CHJ

Established Member
Joined
31 Dec 2004
Messages
20,131
Reaction score
74
Location
Cotswolds UK
OK for locating and centralizing a reversed bowl.

My findings, and I've made several versions, have always been that clamping forces are very restrictive and tailstock support is essential for anything more than light sanding.

Dependant upon actual construct, I found I could often be in the situation of needing three hands to enable applying clamping force whilst securing the jaws.
 

Tris

What am I doing here?
Joined
28 Nov 2018
Messages
277
Reaction score
99
Location
Moreton in marsh
I made some from 12mm mdf, routing out the slots and using cork buttons. I'd agree with the earlier comment about needing the tailstock if cutting. I've even used clingfilm to help hold a wide bowl to the jaws to take the pip off.
Worth a go if you have a router. The one I made came from instructions from an Australian wood turning club
 

Orraloon

Established Member
Joined
18 Oct 2016
Messages
492
Reaction score
60
Location
Blue mountains Australia
I made this one over 10 years ago. I used particle board flooring for the back and the front is laminate flooring both from offcuts. The holders are small sink plugs filled with silicone . Ply would work fine too. As the others said it is for finishing the bottom. I can get away with a light finishing scrape unsupported but have had one fly off by overdoing it. No problems when sanding. Plenty online instructions on making them.
Regards
John
 

Attachments

SVB

Established Member
Joined
2 Jul 2005
Messages
1,918
Reaction score
98
Location
Nailsworth, Glos
What lathe / chuck do you have. One option is homemade Cole jaws mounted by wood plate chuck jaws. I can photograph what I have done if it helps.
 

Lignafera

Member
Joined
10 Jan 2017
Messages
14
Reaction score
6
Location
North Norfolk
Longworth jaws are awkward to tighten, need a third hand. Try making a set of reversing jaws out of 12mm rigid plastic, like the Nova ones, as I did. And buy the buttons from Charnwood.
 

Democritus

Established Member
Joined
8 Jun 2020
Messages
200
Reaction score
56
Location
Ramsbottom
I have a commercially produced Longworth style chuck of the sort minilathe showed which I use only occasionally. I find it a bit unwieldy, and agree with Chas that actually putting a bowl in the jaws would be easier if you had 3 hands. I think, however, it is important to recognise that these chucks are not intended for anything more than light trimming of tenons, finish sanding and polishing etc. The instructions that came with mine indicate that it shouldn’t be used at speeds > 600rpm.. Even so, as belt and braces, I always bring up the tail stock.
D.
 

minilathe22

Established Member
UKW Supporter
Joined
31 Jan 2016
Messages
403
Reaction score
75
Location
Stevenage, UK
Yes the picture is of a manufactured one, for 16" bowls they are around £140 to buy which I think is too much if it cannot hold things securely. I only want it for removing tennons as suggested but the quadrant version is probably more versatile.

Once you buy a new tool you always find a thousand other ways of using it!
 
Top