This section is from the book "The Boy Mechanic Vol. 2 1000 Things for Boys to Do", by Popular Mechanics Co.. Also available from Amazon: The Boy Mechanic, Vol2: 1000 Things for Boys to Do.
The towel roller is made of a piece of broom handle, 16 in. long, squared on both ends and a nail driven in the center of each end. Procure two small pieces of tin - disks about 1 in. in diameter w i 11 d o - a n d drive a hole through the center of each with a wire nail. Cut from one edge of the disk down to the hole taking out a narrow V-shaped section.
Fasten each disk to a block and nail these to any convenient wall at such a distance apart that the nail heads in the broomstick will slip down in the slots and rest in the holes in the centers of the disks, which form the bearings for the nail heads resting beyond the tin and next to the block.
With a little care the tin can be made to bulge outwardly in the center making room for the nail heads. - Contributed by L. Alberta Norrell, Augusta, Ga.