Making a lathe chuck on the bot

[myxpykalix]

What i need to do is powersand the inside of these boxes i made. I've tried using a sanding mop on a drill and it just doesn't cut it. I want to mount the box, open end out like this [ so i can reach inside and sand.

I can't put the tailstock up to hold it in. I was thinking about something like a jamb chuck but i'm afraid it won't stay in.
In my turning days we had some type of isocyanurite(?) glue with an activator we could spray on apply a small plug then just knock it off when done.

Here is what i came up with. If you have better, safer, easier ideas i'd like to hear them.:confused:

[Burkhardt]

Longworth Chuck? (http://www.woodworkersguide.com/2010/10/17/how-to-make-a-longworth-chuck/)

[myxpykalix]

G,
My drawing was my remembered version of the longworth chuck i saw from others who owned them when i was woodturning. Thanks for that refresher. Problem is i'll spend more time making this jig then using it!:eek:

[Burkhardt]

... Thanks for that refresher. Problem is i'll spend more time making this jig then using it!:eek:

Hm, maybe you can find somebody with a CNC machine ? :D

But I can see for a single use jig it would be a bit extravagant.

[gundog]

That is a very nice design I could see Woodpecker offering that up as a tool made from Aluminum and anodized red. Now one of you guys who likes to play with gears should make it with gears.

Mike

[jTr]

Jack,
Penn State Ind. has a dedicated unit for $100 - or - if you have a compatible chuck, they have face plate jaw sets at around $35.

http://www.pennstateind.com/store/flat-jaws.html

[myxpykalix]

A couple weeks ago i was searching for a way to make a Longworth type chuck to hold some round boxes for sanding on my lathe and i stumbled across the free plans from woodworkers journal and thought some of you might be interested.

http://www.youtube.com/watch?v=28Nlk1uIuIs

http://www.woodworkersjournal.com/Uploads/Public/Documents/12in_Longworth_Routing_Pattern.pdf

http://www.woodworkersjournal.com/Main/Articles/Bowl-Turning-Longworth-Chuck-Routing-Pattern-and-C-9366.aspx

On the last link it has 10, 12, 14, 16 and 20" versions for CNC.
The one question i had that i was too sleepy to try to find was, where i could get the hardware (the rubber bumpers, ect) for this? If anyone follows this and sees the source post it here.
Nevermind i found it...
http://www.pennstateind.com/store/CRJPIN12.html?prodpage=1CR
My assumption is they are just bolts with rubber bumpers that screw into the metal faceplate so i guess you'd need to glue some corresponding nuts into your wooden piece?

[makeCNC]

Longworth Chuck? (http://www.woodworkersguide.com/2010/10/17/how-to-make-a-longworth-chuck/)

i found this tutorial on drawing a longworth chuck for export to DXF
and laser cutter would be fine for CNC router as well I am sure
and the inkscape method of drawing could easily be ported to V-Carve

hope its of interest

here is the link

http://nerdclub-uk.blogspot.com/2012/09/make-your-own-longworth-chuck-any-size.html

[khaos]

I wanted to see if it could be done easily. I made plans for one in about 5 minutes in aspire. Heres the exported vectors for use in whatever software you have. :) Use how you will. :D As usual remove the .txt from the name.

[Burkhardt]

...........Now one of you guys who likes to play with gears should make it with gears.......

Something like that?

https://www.youtube.com/watch?v=JjvRi73xesk

https://lh3.googleusercontent.com/-d0a1lqyVoOw/UspNp2lWxAI/AAAAAAAAEfY/xbL8HTPMQ10/w452-h456-no/LatheChuck.jpg