Stamping causing leather to misshape

[howlback]

I've been stamping leather coasters out of 8-9oz leather and every once and awhile one of the coasters comes out misshapen (looks oval). I've made dozens and so far it's only happened twice but I was wondering if there was something I could do to prevent it.

[Jaymack]

To prevent this, I glue the leather with rubber cement to thin rigid vinyl before I case and stamp.  It is not uncommon for leather to misshape.  

 

 

[Fire88]

Like jay Mack said you can glue em down with rubber cement or put painters tape on the backside before casing

[JMcC]

I always use rubber cement to glue any leather down before tooling unless it is a belt or something similar. I learned as you did by noticing misshapen rounds when tooling them before I was instructed to glue them down before casing or tooling.

[plinkercases]

use shelving paper mack tack on the back side, or painters tape. that way I can still move the piece around on  the slab

[buzzardbait]

I use clear heavy duty shipping tape on the back, works great.

[Mark842]

I use Buzzardbaits' method whenever stamping or tooling. I use 2 mil packing tape and cover the back with a little hanging over the edges so it's easy to peel off when done. It also helps with not getting dye on the back of a project if you want it clean/undyed.

[CLW]

I use the sticky peel off shelf liner on the back of my project to help it keeps its shape.  I've tried painters tape too.