In article 68556c59-c7a7-4930-b8d9-af56069b8680
@g13g2000yqj.googlegroups.com, says...

I have been given some pieces of what I think is MDF. It is less than
1/8" thick and I can use more. Does MDF come this thin and where can I
get more?
Thanks for any and all help.

If it's that thin it's likely "hardboard".