Tej Grewal prints, prototypes and finishes parts in public. Most of it stays in the lab. Now and then something is worth boxing up. This is where those live.
A cordless polisher, three shaped tips, cutting compound and finishing polish. Layer lines go in. A mirror comes out.
The kitThe next one is on the bench. Follow along on Instagram, or leave an address on any product page and you will hear when it is ready.
Not yetTej Grewal is an engineer in Calgary. He cofounded Qube Technologies, which builds methane monitoring hardware for industrial sites, and was named to the Forbes 30 Under 30 list for energy in 2023.
@tejslab is the workshop side of that: 3D printing, prototyping, finishing, and the occasional part that started as a work problem and turned into something people kept asking about. In late 2025 a technique for printing PETG nearly transparent got picked up across the maker press. The polishing kit came out of the same habit of finishing parts properly and getting asked what was used.
Nothing here is sold under anybody else’s name. If it is on this site, he built it, tested it, and stands behind it.
Most of what gets built never reaches this page. It does reach @tejslab.
Questions about a product go through the product page. Everything else, send a message on Instagram. There is no chatbot and no support portal. There is one person and a workshop.