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Home Made 26" Drum Sander

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Project by George M posted 1113 days ago 8014 views 96 times favorited 26 comments Add to Favorites Watch

This is my latest shop built tool. Previously I built a motorized router table.
As you may recognize, I shamelessly copied two other Lumberjocks JohnZ and TomT. In fact both John and Tom were kind enough to answer questions for me. Also Tom sent me some great bearings to use and John milled some threaded rods and aluminum plugs for the transport rollers.

The unit is full height. It has casters, but won’t be moved very often. I am lucky enough to have a large shop this was possible. A couple of changes from John and Tom 26” width of sanding surface, and I put the chain drive inside the lower base to keep it out of the sawdust. When I made up my mind to build a drum sander, I knew I wanted one big enough to handle glued up table top sections. The 26” came about from the size of the transport belt – 25×60.

Structurally the material is Hem Fir and MDF. The transport bed is the bed from a treadmill I got off of Craig’s list for $25. I intended to use the motor also, but it was belt driven and the belt was too short to work. I tried to get the belt pulley off to use a gear, but was not successful. So I visited my surplus store and picked up the geared motor you see in the picture. It is a 90rpm, but I geared it down to be about 56rpm. The drum is made like the Shop Notes article mentioned by John. That is many circles of MDF glued up and then sanded smooth – Final diameter is 5” +-. The motor is a 1 1/2 HP I again got off of Craig’s List. It is a 3450rpm, so I used a 2 1/2’ pulley to a 5” pulley, bringing the rpm down to 1725. For the sanding belt, I ordered the conversion kit from Jet for their 24” sander. Since their drums are 6” and mine is 5”, the kit worked almost perfectly. Had about ½ left to trim off of the end of the drum (the drum itself is 28” in order to give me a clear 26” sand area).

The result – It works very well. I am fine tuning it. Right now I have it to within .007” from side to side. The transport motor may be a little under powered so I may try to gear it down a little more.

Thanks for looking.

-- George, Parker Colorado





26 comments so far

View bighead's profile

bighead

14 posts in 2347 days


#1 posted 1113 days ago

Nice work Do you think a 5HP 3450rpm mtor would be to big for this tool?

-- Preston H Kamloops BC Canada

View itsmic's profile

itsmic

1419 posts in 1702 days


#2 posted 1113 days ago

Very Nice Job, looks to be the real macoy, it’s great to see such innovative work here on the site, thanks for sharing

-- It's Mic Keep working and sharing

View Abbynormal's profile

Abbynormal

34 posts in 1419 days


#3 posted 1113 days ago

wow most impressive, excellent work

View bigike's profile

bigike

4030 posts in 1872 days


#4 posted 1113 days ago

Great work I have to built myself one of these one day I hope soon.

-- Ike, Big Daddies Woodshop, http://www.icombadaniels@yahoo.com

View Dustmite97's profile

Dustmite97

430 posts in 1804 days


#5 posted 1113 days ago

Wow, that’s awesome! I still need to build one of these some day.

View scarpenter002's profile

scarpenter002

466 posts in 2488 days


#6 posted 1113 days ago

Excellent job. You have started me to researching and planning my very own version of this. Thanks for sharing.

-- Scott in Texas

View Ken90712's profile

Ken90712

14818 posts in 1772 days


#7 posted 1113 days ago

Cool machine, looks great!

-- Ken, "Everyday above ground is a good day!"

View Jim Jakosh's profile

Jim Jakosh

10950 posts in 1689 days


#8 posted 1113 days ago

Nice machine.Good job on it. I could use one right now for some 21” tops that won’t fit in my planer.
ou may have inspired me to build one too. I had drawn a sketch once and I was thinking of using a 4 bar linkage to raise the feed table with one screw. How do you adjust the height of the 4 screws together?...Jim

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

View George M's profile

George M

117 posts in 1348 days


#9 posted 1113 days ago

Thanks for the comments guys.

Preston – 5 hp should work just fine, except it may be overkill. the idea of a drum sander is to remove small amounts at a time.

Jim – The four screws are connected by a chain under the base. That way it stays away from the dust. By turning the walnut handle (front right), it turns all four screws.

-- George, Parker Colorado

View DocSavage45's profile

DocSavage45

4678 posts in 1426 days


#10 posted 1113 days ago

Looks great! Nice to have the help? I’d be interested in knowing total time in the build and an update as to how this “big dawg” performed for you, and how you would modify it in the future. Nice to have a shop big enough to use it. LOL

-- Cau Haus Designs, Thomas J. Tieffenbacher

View johnzo's profile

johnzo

70 posts in 1379 days


#11 posted 1113 days ago

George,
You did it man! The final pictures look great! I think you credited Tom with some of my machining, but the final result is amazing. Warning though: your ‘under the cover’ sprocket/chain drive idea may be stolen by the industry leader, Woodmaster Tools. Nice innovation!
I’m sorry I doubted your ability to pull off a full 26” wide transport, but You did it, and my hat’s off to you! Great job, and enjoy your machine!
John Z

-- 70 is the new 50!

View George M's profile

George M

117 posts in 1348 days


#12 posted 1113 days ago

Doc,
Indeed getting help was not only nice but imperative. I dont think I would have attempted it without the help from John and Tom. But then that is what this site is all about. I want to put some table tops through it before I come back and update the performance. Same thing about what I would change.

John,
So sorry about the credit. I have corrected it to give you the rightfull gredit. With some test sanding without being hooked up to my DC, I am glad I did put the chain under the bottom. Thanks again for all you help.

-- George, Parker Colorado

View Jorge Velez's profile

Jorge Velez

340 posts in 1170 days


#13 posted 1112 days ago

excelent project! any chance to share plans? I’m interested on builing one

-- Jorge Velez, Guadalajara, Mexico.

View George M's profile

George M

117 posts in 1348 days


#14 posted 1111 days ago

Jorge,
I do not have any plans. I basically copied Johnz and TomT with my own variations. I would be glad to answer any specific questions you may have.

-- George, Parker Colorado

View SgtSnafu's profile

SgtSnafu

957 posts in 1855 days


#15 posted 1111 days ago

Great looking Sander – very well done

Thanks for sharing

-- Scotty - aka... SgtSnafu - Randleman NC

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