Self inking stamp (47x18 mm)

Self inking stamp (47x18) (same ink pad as trodat 4912). 

here is video 

www.instagram.com/p/CMf8UjKhHci/

what you need:

• ink pad (47x18 - for 4912 stamps)
• laser engraved rubber (or you can try printer stamp design with TPU)
• some spring for stamping mechanism (you can extract from curent or broken stamp)

PETG is recomended, but should work with PLA too…