PVC Jamb Chucks

Re: PVC Jamb Chucks

Wayne Leach

>Being a newcomer, I was interested in this jamb chuck and tried to search for more info on the original posting with no luck. It looks like a good idea and I would appreciate any input on finding the original posting if you will.

Thanks, Wayne

Re: PVC Jamb Chucks

Jennifer@Indy.USA

>Wayne I searched for it too so I could give credit where it was due, but came up with nothing.

Jen

Found it! Capt. Skip! *LINK*

Jennifer@Indy.USA

>It was Captain Skip who posted it....Thank you sir :)

Jennifer


http://www.woodcentral.com/cgi-bin/turning.pl?noframes;read=61481

Re: PVC Jamb Chucks

DWFII

>what is the red on the end?

DW

In the High Desert of Central Oregon

Re: PVC Jamb Chucks

Barry Irby

>I hate to be a spoil sport, but didn't someone also point out that the plastic pipe has a tendency to crack and fail suddenly and dangerously? I have used PVC myself, but I usually compress it with the chuck rather than expand the from the inside. Seems this might be inviting a failure. Be careful.

Duct tape?

Thomas Skaggs, Foothills of Mount Level

>I wonder if a good wrap of duct tape on the PVC pipe would help avert such a danger?

Tommy

Re: PVC Jamb Chucks

tek-Brunswick, Ohio

>Here is a PVC jamb chuck. I got the idea from DIY Network's Dave Hout, when he did a demonstration at Rocklers. 3" PVC pipe will jamb fit over the base of Talon jaws, when they are fully closed. I'm not sure what other chucks this works for. In use I would have pushed the chuck back until it bottomed out against the chuck body. I just stuck it on for the picture and left about an 1/8 gap between the body and the chuck by accident.

Re: PVC Jamb Chucks

Jennifer@Indy.USA

>It's a rubber material that I have that has a very sticky adhesive on one side. You peel a sheet off to expose the adhesive.

Jen

Re: PVC Jamb Chucks

Jennifer@Indy.USA

>Hi Barry,

Hmm....well I suppose if somebody cranked the jaws open hard enough you could probably bust through the PVC, but this is pretty thick PVC. I'm just opening them enough to grip the pipe to keep it from slipping. With the tailstock pulled up and the bowl pressed I feel confident that there's no serious danger. Thanks for the heads up though. It will certainly make me think twice about cranking too hard on the jaws when putting it in place.

Jennifer

Re: PVC Jamb Chucks

Fog Tanner

>The same can be said for some of the wood we turn. Turning is, like a lot of other things we do, an activity which has it dangers and should be approched as such. I use PVC for vacum chucks, but stay within their limits. I do look at the PVC for any cracks that may have developed or any other stress marks before I use the chuck. Just like checking a raceplane/car before running it. Working with wood, I approach anything that goes on the lathe as though it could/would explode and just use caution. if you are not comfortable with the situation, don't do it. But, if you get complacient turn the machine off rethink what you are doing before you get hurt.

Of course I also used to climb mountains and race airplanes, so I have a different view of personal risk levels and mortality.

Re: Found it! Capt. Skip!

Wayne Leach

>Thanks a bunch for digging the info up Jen, I'm new here and it looks like a very useful idea!

Wayne

Re: PVC Jamb Chucks

Arch

>Hi Jennifer, Not as cheap or as pretty as plastic, but iron pipe nipples (outside threads) and couplings (inside threads), both straight and reducing are useful and safe for woodturners. Take a look next time you are in a plumbing shop or section of a DIY store and I bet you will conjure up several purposes in addition to jam chucks. Arch

Re: PVC Jamb Chucks

David Dixon

>If you want to make the pvc stronger glue a piece of pipe on the inside of the reducing coupling.(thats as long as the chuck can still grip it. I don't know much about the chucks but I know alot about pvc pipe.Make sure you don't get foam core pipe,get schedule 40 or 80.The duct tape idea would keep it from coming apart if it cracked. You could use some of that clear packing tape and you could still see the faces of the plastic. David

Welcome

Capt Skip

>Thank you for the appriciatation. I was delighted at the time of my discovery.

I am very happy I was able to contribute to this site.

I had trouble with sticky foam as i would wander off the rim. I now use a short section of 1/2" reinforced pvc tube, left over from my vacuum chuck rigging. I split it lengthwise and thenslide it over the end. Adds good grip and cushion.