The main difficulty in the manufacture of a belt sander is the rollers. Many people simply buy or cast them from aluminum and then grind them on a lathe. We offer a cheaper and easier way to make MDF rollers.
- MDF 22-30 mm;
- thick-walled plastic pipes;
- bolts М12-М14 with nut and washer.
Roller making process
The driven roller will consist of several MDF washers glued together. Moreover, a bearing must be pressed into each of them. Then the MDF blank will be pressed into a piece of plastic pipe.
Blind holes are drilled on MDF blanks with a Forstner drill for the bearing diameter.
Then washers are drilled around them with a crown.
Bearings are pressed into the blind holes of the blanks.
Next, it is necessary to widen the hole from the center drill of the crown to the diameter of the inner bearing race.
Blanks with bearings are glued together 3-4 pcs. They can be pulled together with a bolt and nut, through washers.
After the glue has set, the blanks are ground so that they can fit in a piece of plastic pipe. The workpieces must fit tightly into the tubes.
The lead video is much easier to make. It is enough to glue together 3-4 MDF blanks, and after they have set, cut out the blank on a jigsaw machine.
Then it is turned and glued into a plastic tube.