|Project by TomT||posted 01-31-2011 09:17 AM||16149 views||167 times favorited||59 comments|
First off, let me thank all of the great Lumber Jocks (especially John Z) for all of their help and inspiration.
This was a very challenging and rewarding project. I just love shop built machines so, when I first started seeing all of the great drum sanders show up on Lumber Jocks I had to build one myself. So, after a couple of months, a lot of head scratching and about 300 bucks it is finally complete. Here are the details:
Base frame is maple with pocket screws. Sides, front and back panels and mid panels are MDF. Conveyor table (borrowed from John Z’s design) is two 3/4” pieces of MDF laminated. I made one change however, adding a 1/4” piece of HDPE to the top to give it a smooth slick surface. The conveyor rollers are 1 3/4” PVC with ball bearings on the idler side and turned aluminum hubs on the drive side. Drum is 5” diameter aluminum tube with turned hubs on a 5/8” shaft. Sand paper is held on by hook and loop. Conveyor drive is a variable speed 12V DC gear motor that I got off Ebay. I am powering it with an old power supply out of a scraped home computer. Sanding drum is powered 1 to 1 by an old 1/2 HP 1750 RPM motor that I already had. I was a little worried that a 1/2 HP motor would not be enough but, so far it has worked out fine. One other feature that I added was a set of tension rollers. They are spring loaded 3/4” steel rods that run on bronze bushings.
As far as performance…. It works great. Table adjusts easily, drum and conveyor run smooth. I don’t expect it to replace my planer but, for highly figured woods it has been just super.
If anyone else gets the bug to build to build such a machine I say go for it. I will be glad to answer any questions and help out where I can.
-- Tom T, Orange County CA.