croessler Posted July 19, 2012 Report Share Posted July 19, 2012 So... I'm in a bit of a quandary and would like to solicit your opinions. When finishing up my turnings it can be difficult to get a good finish cut on the bottom and / or foot of the bowls or platters. In researching alternatives I still came back to two possibilities: The Longworth ChuckA Vacuum Chuck Has anyone had any experience with either of these? Even better, has anyone had experience with both? Having used neither I am seeking some guidance from the community at large. Chris Quote Link to comment Share on other sites More sharing options...
Hybrid-woodworker Posted July 19, 2012 Report Share Posted July 19, 2012 I have not used either but plan to make both. I see the longsorth as useful for bowls and not much else. I see the vacuum chuck being used for platters, hollow forms, bowls. I think each has it's niche. My plan is to build a vacuum chuck first and see if it handles everything I want it to, then build the longworth if needed. BRuce Quote Link to comment Share on other sites More sharing options...
sbarton22 Posted July 20, 2012 Report Share Posted July 20, 2012 What kind of vacuum does a fella use wit hone of those bad boys? Quote Link to comment Share on other sites More sharing options...
Hybrid-woodworker Posted July 20, 2012 Report Share Posted July 20, 2012 Maybe. http://www.harborfreight.com/25-cfm-vacuum-pump-98076.html. Not sure if it has the volume necessary but might be worth a try. The other alternative is a Venturi system that creates vacuum from air pressure. Quote Link to comment Share on other sites More sharing options...
Hybrid-woodworker Posted July 20, 2012 Report Share Posted July 20, 2012 The venteri is like this. http://www.woodturnerscatalog.com/store/Chucks___Vacuum_Chucks___Holdfast_V810R_Vacuum_Generator___holdfast_v810r Quote Link to comment Share on other sites More sharing options...
carverken Posted July 20, 2012 Report Share Posted July 20, 2012 I have limited experience with both in classes. As was stated both have their respective benefits. If you turn a fair amount of badly spaltted, punky wood, natural edge, or bark inclusions, the longworth is the way to go. You wont be able to maintain vacuum, Some of the natural edge, if its not really close you wont be able to catch with the longworth. JMHO Quote Link to comment Share on other sites More sharing options...
croessler Posted July 22, 2012 Author Report Share Posted July 22, 2012 Unfortunately it seems there is a valid case for both devices depending upon the material. Nuts...... Quote Link to comment Share on other sites More sharing options...
Hybrid-woodworker Posted July 23, 2012 Report Share Posted July 23, 2012 Yep, one of those cases where you have to figure out what type of projects you will be doing and try to match the chuck to the project. I plan to do the vacuum chuck first but I know that I will doing " standard " bowls and platters, so it will be used more than the log worth. BRuce Quote Link to comment Share on other sites More sharing options...
cts1085 Posted July 23, 2012 Report Share Posted July 23, 2012 If it helps - with a router and tramel you can make your own longworth chuck out of plywood, some bolts and a small face plate. If you google you can download free plans to make it - I would start with it and then move to other chucks as needed by your projects. Quote Link to comment Share on other sites More sharing options...
Hybrid-woodworker Posted July 25, 2012 Report Share Posted July 25, 2012 Found this link over on the Lumberjocks site, in case you want to make your own. http://www.woodworkersguide.com/2010/10/17/how-to-make-a-longworth-chuck/ Quote Link to comment Share on other sites More sharing options...
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