| Project by rareddy | posted 294 days ago | 3563 views | 29 times favorited | 25 comments | ![]() |
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Just put this up to showcase my home made 22” drum sander. I HATE sanding. And trying to get a glued up panel perfectly flat is time consuming and dirty. So I found a plan on the internet which I adapted to a larger unit.
The drum is approximately 5.5” in diameter. The sand paper is held on with velcro. I bought the motor on Ebay for a steal, around $60. The table I already had laying around for the last couple of years, as it was going to be my workbench top. Nearly the entire base is made from 2×4 construction lumber, except for the horizontal members which hold the pillow block bearings (which I also bought on ebay).
The velcro mat and sand paper comes from Woodmaster Tools, whose website really blows. You’d think they would have all the sand paper in one section.
The drum is made of 3/4” MDF discs that I cut using a router. I think there are 32 of the discs, with a 5/8” hole drilled and placed on a metal rod I got from Home Depot. If it were any longer, I would use a 1” rod to stiffen it up, however gluing all the discs up made for a rock solid cylinder. I used regular yellow carpenter’s glue.
The cylinder rides in pillow block bearings, and once mounted, I trued it up by taking a 3” wide board and gluing some of the 80 grit sandpaper to it. Then, holding the board down on the table with the paper side up, I raised the table so that the drum would just touch the paper. I moved the board across the length of the cylinder to smooth it down, and this would also insure that it was parallel to the table. I put pencil lines all over the cylinder so I could see where I sanded and see the low spots. I kept raising the table until all the pencil lines were removed. Kinda like an upside-down lathe with a sand paper cutter.
Once the cylinder was round, I glued the velcro backing to it, spiraling it around from end to end. I used a spray adhesive for the glue. Once the glue is dried, I wrapped the sandpaper around it in the opposite direction.
Other features of interest might be the motor mount. It’s mounted to a piece of plywood, which is hinged to the base of the unit with a piano hinge at about a 45 degree angle down from horizontal. This allows self-tensioning of the belt… I have no idea if it’s the right amount of tension, but it sure seems to be right.
The table is hinged to the base as well, and a simple threaded rod with a home made handle is the raising mechanism. It’s great for table tops, but I can only get about a 1” thick piece under it. I may retrofit this to get another 3/4” room… I could also remove the drum and raise the pillow blocks to achieve this.
Since these pictures were taken, I’ve added onto this unit by making a disc sander attachment and table by using the rod that is sticking out in the first picture. It’s a 9” disc, and has a table that can be tilted up to 45 degrees.
For a few more pictures, visit my site:
http://www.areddy.net/wood/tools.html
































25 comments so far
4hisglory
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51 posts in 343 days
posted 294 days ago
looks great
-- 3rd generation craftsman ~ www.passionforwoodworking.com
mzmac
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76 posts in 560 days
posted 294 days ago
I need one!
isetegija
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610 posts in 407 days
posted 294 days ago
Looks very well made.
Thanks for sharing with us and welcome to Lumberjocks community.
-- My woodwork blog : http://www.isetehtud.pri.ee/blog/
dustygirl
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767 posts in 621 days
posted 294 days ago
Nice job on the sander.I like the way you put the dust collector on also.
-- Dustygirl..Hastings,Ontario.. How much wood can 1 gal chuck if 1 gal can't cut wood?
CharlieM1958
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7604 posts in 1111 days
posted 294 days ago
I’d love to have one of these.
How much do you think the total cost of this would be if you started from scratch, allowing say $100 for a used/surplus motor?
-- Charlie M. "Woodworking - patience = firewood"
firecaster
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482 posts in 311 days
posted 294 days ago
I’d like to have an idea of total cost also. I have the plans already. Just too much other stuff going to get started.
looks great!
-- Father of two sons. Both Eagle Scouts.
rareddy
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31 posts in 295 days
posted 294 days ago
I did start from scratch except for the table, which is just some particle board which I laminated. IIRC, I got the motor for $60 off of ebay. The bearings were cheap, maybe $10, and the rest is just framing lumber.
So I’d say around $200-$225.
woodyone
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234 posts in 484 days
posted 294 days ago
great job
Woody.
-- Woody, UK
sidestepmcgee
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136 posts in 618 days
posted 294 days ago
cool job, will be building one of puppies soon!
-- eric post, tallahassee FL
Karson
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25795 posts in 1293 days
posted 294 days ago
I’ve got a Ryobi 16/32” model that I use and the putting on the sandpaper is the pits. I might go for the Velcro on to my aluminum drum so I can change grits faster and easier.
The Delta and the Ryobi both use a spring clip to hold the starting and ending ends below the surface and they are always the pits to get tight. They are in close quarters at the end of the drum and the frame.
I noticed a cut in the end of the last disk. It that where you put the beginning of the sandpaper so the edge doesn’t get kicked up while sanding.
Great job. Well worth the effort.
-- What happens in the workshop stays in the workshop. No wait that doesn't sound right. Karson Southern Delaware karson_morrison@bigfoot.com †
Karson
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25795 posts in 1293 days
posted 294 days ago
By the way check out this site, RedHill Abrasives or Supergrit for you sandpaper rolls.
-- What happens in the workshop stays in the workshop. No wait that doesn't sound right. Karson Southern Delaware karson_morrison@bigfoot.com †
Brad_Nailor
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1214 posts in 850 days
posted 294 days ago
Nice work! I envy you guys that make your own sanders. That is one valuable tool to have in your shop…I too, am curious how much the total investment is to make one of these..and yours is one of the nicer ones I have seen! Also I am curious about the lack of a feed mechanism..whats the deal…you push your piece to be sanded through with a thinner board behind it?
-- David, South Windsor, CT "I love the smell of sawdust in the morning"
BarryW
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872 posts in 799 days
posted 294 days ago
There appears to be a stress crack on the drum end…something controllable???
-- /\/\/\ BarryW /\/\/\ Stay so busy you don't have time to die.
rareddy
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31 posts in 295 days
posted 294 days ago
No crack, just a slot I cut by hand to tuck the paper into, otherwise the edge could catch and unravel (or so I’m told ;-)
As far as the feed, I made a push board that’s 1/2” thick, since I’m usually sanding pieces that are 5/8” or 3/4” or so.
Garyb6
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262 posts in 523 days
posted 294 days ago
Nice, job! Did you desgn this on your own or from existing plans?
-- Garyb6, “Make everything as simple as possible, but not simpler” - Albert Einstein
W. Paul
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40 posts in 982 days
posted 294 days ago
What HP motor did you use? Is it enough, or would you increase it some? #5 on my shop list is to make one of these (no’s 1-4 belong to SWMBO).
-- Paul, Shelbyville, KY; (Ps 145: 1-2)
Dusty56
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3458 posts in 581 days
posted 294 days ago
I’ve read that heat generated by the sanding process can destroy the Velcro hooks and loops . Have you experienced anything like that yet ?
I wish I could get my money back for the Delta X5 drum sander that I bought….It is really a piece of $&#@
My old Ryobi WDS1600 kicks Delta’s butt !!!
Maybe I should sell the Delta and buy parts to make my own as you have done here .
-- You know you're getting old when you know the difference between you're (you are) and your (belonging to you) AND how to use them in a sentence .
Bureaucrat
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7202 posts in 545 days
posted 293 days ago
I’m going to make one of these one of these days. I’m favoriting this one.
-- Gary, South Central Wisconsin. So much to learn, so little time!
rareddy
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31 posts in 295 days
posted 293 days ago
I adapted an existing design into my own.
The motor is rated at 1.5hp. Works plenty good
Haven’t had any problems with the velcro getting too hot. This stuff is designed for drum sanders, so it’s probably not your standard stuff.
mreza
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29 posts in 421 days
posted 293 days ago
Nice job. These are very useful machines.
One thing I would worry a a bit about would be the table flexing left-right because of the elevation mechanism.
You could also add two screws (instead of one) to two sides and tie them down together with a chain and sprocket. That way turning one will turn the other too.
I built one last year with a conveyor and DC motor. It works great.
Dusty56
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3458 posts in 581 days
posted 293 days ago
Thanks for the Velcro feedback : )
-- You know you're getting old when you know the difference between you're (you are) and your (belonging to you) AND how to use them in a sentence .
woody57
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51 posts in 320 days
posted 293 days ago
I have been wanting to make one of these. I was concerned about getting the cylinder exactly round and parallel to the table. You just showed me a simple and effective method. If anything, I need it to be simple. Thanks for sharing this great plan.
wood_wench
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79 posts in 324 days
posted 292 days ago
Great work – I paid $1,800 for my open arm drum sander – yours looks like it works just as well and I’m pretty sure it didn’t cost $1,800.
Andy McCormick
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20 posts in 488 days
posted 289 days ago
How does the wood go through the machine? Is there a power feeder?
-- Andy, Liberty,Indiana, www.mccormickwoodworking.com
ajosephg
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440 posts in 454 days
posted 289 days ago
I’d like to see a photo of the router jig used to make the discs
-- Joe