Bumper: an add-on for the front of the head
The Bumper add-on goes on the front of the head: a chamfered bar along the bottom edge. Both slopes are 45 degrees. It adds 0.8 g of PETG. On a bot built by 3D3D it adds $0.09, and it fits 8 of the 8 heads, the Gem head included.
- 0.8 gPETG added
- +$0.09on the built price
- 8 of 8heads it fits
- Armour and bumpersgroup
How it is priced
It sits on the front of the head. The price above is worked out on the Gem head on the Mini v2's body, from the same cost sheet as every bot: $0.11 a gram in PETG, 1 extra piece, so it is a few cents, not a new part to buy.
Finishing: 1 kit piece to glue on. 3D3D charges $25.00 an hour for that, counted by the minute when it slices the job, so it is not in the figure above.
Which heads it fits
| Head | Result |
|---|---|
| Gem head | Fits |
| Mini head | Fits |
| Dome head | Fits |
| Visor head | Fits |
| Cyclops head | Fits |
| Twin-lens head | Fits |
| Antenna head | Fits |
| Pod head | Fits |
Bodies it does not fit
- Desk, turns and nods body, Gem head: tilt turns from -30 to 0 degrees before anything touches (the servo goes -30 to 30).
- Tower body, Gem head: tilt turns from -30 to 0 degrees before anything touches (the servo goes -30 to 30).
Not together with
- Chin: The Bumper runs into the Chin.
See every add-on or the questions people ask.
All prices are in Canadian dollars before tax and shipping. Bought parts are priced from amazon.ca listings (seen 2026-11-04), plus 15% when 3D3D buys them. Printing, the build and test fee and finishing are 3D3D's own rates, listed on the prices page.