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Rolling body with small wheels: light and simple
The Rolling body with small wheels rolls on two small wheels and two glides. With the Gem head the bot is 80 x 72 x 107 mm and 175.9 g, and the body itself is 56.9 g of printed plastic in 9 pieces. Built and tested by 3D3D that bot costs $295.73 CAD, $67.16 less than the Mini v2's rolling body.
- 80 x 72 x 107 mmwith the Gem head
- 56.9 gPETG and TPU, 9 pieces
- −$67.16built price against the Mini v2's body
- 8 of 8heads that fit
What it is
Two small wheels and two glides under a flat lid. The lightest and simplest.
Its face, voice and moves run in the test room today. The program that runs them on the real ESP32-S3 chip is not built yet.
What it costs with each head
| Head | Look | Built by 3D3D (from) | Against the Gem head |
|---|---|---|---|
| Gem head | A shield, narrow chin | $295.73 | Same price |
| Mini head | Friendly and rounded | $285.78 | −$9.95 |
| Dome head | Round face, half-ball back | $295.93 | +$0.20 |
| Visor head | A wide band, camera at the side | $295.88 | +$0.15 |
| Cyclops head | One big eye | $296.53 | +$0.80 |
| Twin-lens head | Two lens rings (one camera) | $296.50 | +$0.77 |
| Antenna head | Bubble head, two antennae | $296.08 | +$0.35 |
| Pod head | A capsule on a stem | $296.61 | +$0.88 |
Bought parts of this body
| Part | Used | Pack price (CAD) | Your cost, whole packs | 3D3D's price, parts + 15% |
|---|---|---|---|---|
| FS90R continuous servo, 2-pack with wheels (DIYmalls) Wheel drive (FS90R). amazon.ca, seen 2026-11-02. Listing | 2 | $19.97 for 2 | $19.97 | $22.97 |
| PTFE glass-cloth tape 10 mm x 10 m (the pad on the glide's dome), sold by the roll Glide. amazon.ca, seen 2026-11-02. Listing | 2 | $9.98 for 1 | $9.98 | $11.48 |
| M3 x 4 self-tapping screw Glide. amazon.ca, seen 2026-11-04. Listing | 2 | $16.99 for 50 | $16.99 | $0.78 |
| M3 x 8 pan-head screw M3 screw hole with head recess, M3 screw column (base to lid). amazon.ca, seen 2026-11-04. Listing | 6 | $16.98 for 20 | $16.98 | $5.85 |
Pack prices are what amazon.ca listed on the date shown.
The bot it makes
The small-wheel bot is this body with the Gem head. See all the parts 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.