You must remember this
A nick is just a nick, a scratch is just a scratch
The fundamental things apply
As CD's die
(forgive me Warner Bros)
So you went to the local library & got a DVD movie to watch with your honey. Guess what? It won't play!
That little tramp who returned it yesterday carried it in her purse for three days with no jewel case!
Run it through this CD Polisher for five minutes & it will play like new.
I store my data archives on DVD-RW. If one bit is misread, the whole file is trash. A data disk must be exactly written & verified.
This machine can be used to repair disks that have become unreadable. There is a very good chance that the files can be recovered.
When putting together the parts for this project, use my mantra 'Goodwill, Goodwill'. If you shop well (or have a big stash of parts) the machine will cost under twenty dollars to build.
Before we start, let me apologize for my lack of describing how to accomplish each and every step. I am assuming that a project meister who chooses to build this machine can infer much info from the pictures.
It's my dad's fault. He taught me by doing, not by lecturing.
So, in memory of my father, I will not give a list of tools, materials, or skills needed to complete this project.
Well, if you see that the machine actually runs, you might get to step 3. Or 4. 5 is a good one, too.
Here's a video of the thing in action:
Step 1: The Bearings
Find a pair of junk rollerblades at Goodwill. For two bucks you will get sixteen bearings, axles, bushings.
At the home center I found 3/4in CPVC (not PVC) fittings. The bearings are a perfect slip fit. The tube stub is cut off & cemented to lock the bearing in the housing.
1/4-20 hardware is used to create the axle. The bushing flange is cut off (shorter than the bearing width) to center the axle.
We need two of these.