Avoiding Lathe Chuck Workholding Marks

[Eddyde]

I use aluminum roll flashing, its cheap and readily available.

 

[TomS]

For square, rectangular, hex or round stock larger than 1" diameter I use pieces of 1/8" x 1/2" aluminum of the appropriate length. For round stock 1" diameter and smaller I have a collection of shaft collars that I've sawed a split in.

Like this:

 

[Cadillac]

I also use copper pieces. I have various scrap of copper water pipe. Just slit and wrap the part. If part is bigger like yours I just cut small pieces to cover the jaws. I’ve also used the cardboard covers from note book paper. A little thicker to get a smoosh effect. Good job on parts.

 

[savarin]

I use brass shim stock.
As an aside I've also used a few layers of masking tape or electricians tape to wrap knurled parts with.
The tape compresses into the voids and the jaws just kiss the points without marking them.

 

[derf]

Business cards......or card stock.

 

[kvt]

Had not thought about business cards. But have enough of them around and cheaper than shim stock.

 

[macardoso]

Wow, Tons of great Ideas. I've been doing this wrong so far!