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12" Disc Sander attachment for my Lathe

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Project by JamesVavra posted 12-27-2010 06:02 PM 5826 views 30 times favorited 13 comments Add to Favorites Watch

I finally got around to building a disc sander fixture for my Lathe (Jet 1442). The disc and table are 3/4” MDF while the rest of the pieces are 1/2” MDF. I mounted two discs on two 6” Harbor Freight faceplates that I have owned but not used for at least a year (the extra thickness is there to allow the plate to clear the motor).

The table top is 12” x 15” (I had a 15” piece of t-track leftover from my drillpress table which helped determine the size) and it’s about 7” high. There is a gap of about 3/16” around the bottom half of the disc for dust collection. Right now, it’s not clamped in place in any way but I plan to extend the guide that slides between the bed rails all the way to the headstock so that, when clamped against the headstock using the banjo, it keeps the table at the correct distance from the plate.

I’m still waiting on 12” sandpaper discs arrive but it tested well with the 6” PSA disc I had laying around.

The only problem I ran into is that the vertical piece of 1/2” MDF in front split a bit on one side, despite my pre-drilling for the screws.

James





13 comments so far

View Jim Jakosh's profile

Jim Jakosh

11489 posts in 1763 days


#1 posted 12-27-2010 06:25 PM

Nice job. That looks to be real handy for sanding and you don’t have to buy another machine!!
Thanks for sharing.

-- Jim Jakosh.....Practical Wood Products...........Learn something new every day!! Variety is the Spice of Life!!

View RetiredCoastie's profile

RetiredCoastie

999 posts in 1840 days


#2 posted 12-27-2010 06:29 PM

Nice work. Well thought out and great execution.

-- www.thepatriotwoodworker.com Proud Supporter of Homes For Our Troops

View brianinpa's profile

brianinpa

1809 posts in 2380 days


#3 posted 12-27-2010 06:33 PM

That is a nice addition to the lathe.

-- Brian, Lebanon PA, If you aren’t having fun doing it, find something else to do.

View rickf16's profile

rickf16

376 posts in 2238 days


#4 posted 12-27-2010 06:42 PM

Now that is a slick idea! Makes one tool…two! I’ll have to make that an addition to my shop, which is small, so this will help save space and money. Thanks for the post.

-- Rick

View jeffthewoodwacker's profile

jeffthewoodwacker

603 posts in 2461 days


#5 posted 12-27-2010 07:25 PM

Great project and addition to the lathe.

-- Those that say it can't be done should not interrupt those who are doing it.

View stefang's profile

stefang

13054 posts in 1992 days


#6 posted 12-27-2010 07:41 PM

Well done James. A very useful accessory. It could be even more useful if you could also build a tilting table for sanding angles.

-- Mike, an American living in Norway.

View JamesVavra's profile

JamesVavra

286 posts in 1973 days


#7 posted 12-27-2010 07:52 PM

Mike – I had considered that, but could not come up with a good design that allowed for a tilting table and dust collection – with the lathe bed so close to the disc and the location of the motor, it would be difficult to replicate the type of dust collection that is typically found on a disc sander – a sleeve that covers the bottom third of the disc. I figured that 90% of my usage would be at 90 degrees, so I decided to keep it simple.

James

View bigfish_95008's profile

bigfish_95008

250 posts in 1761 days


#8 posted 12-27-2010 08:23 PM

What a great use of an existing tool.

-- bigfish "I am always doing what I cannot do yet, in order to learn how to do it." Vincent Van Gogh

View Bricofleur's profile

Bricofleur

1147 posts in 1850 days


#9 posted 01-01-2011 12:45 AM

Great job. I’ve been planning to build one of these for a while, but didn’t get to it yet. You’re inspiring me!

I use MDF a lot and I found out that you never use fasteners closer than 2” from the ends. Second, always use cylindrical screws, never tapered screws. Third, always predrill for longer screws and use bigger drill bit than you would use with solid wood. My ratio is to use 7/64” drill bit with #6 screws and 1/8’’ drill bit with #8 screws. I use the same ratio when using particleboards. Since the hole is wider than normal, the longer screws compensate to get tight joints. Fool proof. Since I came up with this ratio, I never seen MDF splitting. Another thing: Shallow dadoes would have help at lot in your project to prevent the 1/2’’ MDF from splitting.

I was wondering why you added a curved piece down below the disk, behind the table. I believe it is meant to improve dust collection?

Best, and thanks for sharing.

Serge

http://atelierdubricoleur.wordpress.com

-- Learn from yesterday, work today and enjoy success tomorrow. -- http://atelierdubricoleur.wordpress.com

View rance's profile

rance

4132 posts in 1818 days


#10 posted 01-26-2011 03:24 PM

Nice work. One of the things that I’ve never seen posted about using your lathe for something like this is the additional advantage of having Variable Speed(if you have a VS lathe). There are times when this would be a great advantage. This project is on my ToDo list.

-- Backer boards, stop blocks, build oversized, and never buy a hand plane--

View Dusty56's profile

Dusty56

11659 posts in 2345 days


#11 posted 01-30-2011 05:14 AM

I made a similar item and need to finish the table soon ….Mine is for my Jet mini lathe with VS control ….of course I was limited to a 10” disc on it.

-- I'm absolutely positive that I couldn't be more uncertain!

View dbhost's profile

dbhost

5385 posts in 1889 days


#12 posted 06-27-2011 05:16 PM

I am working a project like that right now. I have the disk cut, need to get busy with the table… Except I am using 3/4” cabinet grade plywood. (MDF and humid Texas shops are NOT friends…)

I really like the way you pulled this one off…

-- My workshop blog can be found at http://daves-workshop.blogspot.com

View SugarbeatCo's profile

SugarbeatCo

126 posts in 925 days


#13 posted 06-13-2012 06:57 PM

Great Job, Consider your idea borrowed!!!

-- Always one more tool away from being an excellent woodworker...

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