The smaller plates and unknown thing?

A project log for DIY 3d Printer V slot Guide builds

DIY 2020 builds. Undecided on exact frame type to go with so playing right now and waiting.

RX HMPRX HMP 05/12/2017 at 18:340 Comments

Can you tell me what the top one is and what metal the bottom ones look to be. There heavy.

Pm if you will. Think I will use them to make mounts and brackets ect.