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Thickness Drum Sander #4: Drum Assembly

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Blog entry by Vip3r74 posted 07-29-2013 09:44 AM 2807 reads 2 times favorited 6 comments Add to Favorites Watch
« Part 3: Tables and Lifting Mechanism Part 4 of Thickness Drum Sander series no next part

Today it time for the drum assembly. I did not go for the Velcro method for 2 reasons, to get hold of the velcro and the sandpaper where I stay is expensive and scarce. I have read from a couple of guys using it with the handfeed method that as soon as you stop moving that you get a bit of a deeper cut on that spot. I will be using normal rolls of sandpaper rolled around my drum. What I did was designing my head unit to allow me to remove two plugs that hold the sandpaper in place to allow me to change my sandpaper. I will have to cut the paper for the sides everytime though, I’m sure I can make some sort of fixture to simplify that process.

Total lentgh of the drum is 460mm (18”) and the diameter is 110mm (4 3/8”). Effective sanding area will be 4”. The shaft is a 1” keyed one.

Plugs just pull to sides to replace paper. Once paper is in place push plug back in position and tighten grub screw.

The paper will hook into a slot in the drum and fold back a bit.

Complete head assembly with 2 dust collection ports as suggested by Paul M (shipwright)

Oops, thanks Lew. I completely forgot to say what the drum is made up of. The drum is a Class 12 (8mm wall thickness) PVC water pipe that is filled with 3/4” MDF disks clued together inside the drum.

As always, please advise, criticize or help as you see fit. Thanks for viewing.

-- Create, create, create create. It makes my blood flow. And what better material to use than wood, you can repeat the same object 1000 times and none will look the same in natural form.



6 comments so far

View lew's profile

lew

11348 posts in 3223 days


#1 posted 07-29-2013 11:23 PM

Pretty neat idea for fixing the ends of the paper.
After some use, you get pretty good at a constant hand feed rate so the Velcro system doesn’t present too much of a problem. I have read that the Velcro paper tends to burn less- compared to other methods of fastening- but I have no experience with anything but Velcro.
Here’s a link to the place I get mine. Very reasonable pricing- http://www.supergrit.com/.

How did you construct the drum?

-- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.

View Vip3r74's profile

Vip3r74

71 posts in 1277 days


#2 posted 07-30-2013 05:16 AM

Thanks Lew, added drum construction above.

-- Create, create, create create. It makes my blood flow. And what better material to use than wood, you can repeat the same object 1000 times and none will look the same in natural form.

View Rick M's profile

Rick M

7934 posts in 1847 days


#3 posted 08-07-2013 09:06 PM

I have seen a template online for trimming tapered ends in normal roll sandpaper but I don’t have it bookmarked, might be able to google it.

-- http://thewoodknack.blogspot.com/

View Vip3r74's profile

Vip3r74

71 posts in 1277 days


#4 posted 08-08-2013 05:37 AM

Thanks Rick, I will definitely Google it. As I always say Google is my best friend for any info.

-- Create, create, create create. It makes my blood flow. And what better material to use than wood, you can repeat the same object 1000 times and none will look the same in natural form.

View patron's profile

patron

13538 posts in 2808 days


#5 posted 08-16-2013 06:32 PM

what i have seen for the paper
is make a template from thin ply
same width as the sandpaper
and lay the old one on it (one that is right)
and cut the template to the right angle and length

then you can use the template to cut all the paper you like
ready for any grit changes if you do that

-- david - only thru kindness can this world be whole . If we don't succeed we run the risk of failure. Dan Quayle

View Vip3r74's profile

Vip3r74

71 posts in 1277 days


#6 posted 08-19-2013 05:13 AM

Thanks Patron, I will definitely keep that in mind. I was think about a little block with just the angle but your idea makes more sense because then my length will be right as well.

-- Create, create, create create. It makes my blood flow. And what better material to use than wood, you can repeat the same object 1000 times and none will look the same in natural form.

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