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Tower Bridge
Two towers, two walkways between them, and the desktop drawer under the bridge.
Designed and checked in CAD. Not built in real life yet.
€29
Signature plan. Every computer count included.
Inside
Take it apart
Size
How many computers?
- Height
- 1.21 m
- Footprint
- 129 × 43 cm
- Computers
- 4 laptops + desktop drawer
- Power
- 1 power supply, 228 of 260 W
- Filament
- 14.7 kg
- Print time
- 761 h
- OrcaSlicer estimate, ±15 %
- Weight with boards
- 18.7 kg
- Parts and filament, without boards
- €662
- With used laptops (€40–60 each)
- €822–902
About this model
Two Gothic towers stand on their piers and carry the laptop blades, two to eight of them. The desktop drawer sits in the middle pier, under two lattice bascule leaves. Up top, two truss walkways join the towers. Most parts come from Big Ben, Pisa and the Eiffel, so they were already checked there.
Worth knowing
It is big: 1.29 m long and about 16 kg of filament with four computers, over 1,000 hours on a slow printer.
Shopping list
What to buy for it
| Item | Qty | Price each | Where |
|---|---|---|---|
| Shared supply MEAN WELL GST280A20-C6P | 1 | €93.80 | Shop |
| Mains cord C13, 2 m, one per supply (not in the supply's box) | 1 | €3.60 | Shop |
| Supply output lead Molex 215328-1061 | 1 | €5.20 | Shop |
| XT60 pigtails, 5 + 5 pack (one pair per blade + drawer) | 1 | €11.09 | Shop Ad, affiliate link |
| Wago 221-412 (2-way), single pieces: 4 per blade (red+fuse, fuse+white, black+black, blue alone) | 16 | €0.55 | Shop |
| Wago 221-415 (5-way), single pieces: 4 for the bus + 2 per extra supply | 4 | €0.80 | Shop |
| ELNONE board plug, 2 pack (one per blade) | 2 | €8.56 | Shop Ad, affiliate link |
| JZK 5015 USB fans, 4 pack (blade heads + 4 lid fans) | 2 | €13.61 | Shop Ad, affiliate link |
| Fuse holders, 5 pack (blades + drawer) | 1 | €6.82 | Shop Ad, affiliate link |
| 5 A fuses, 10 pack | 1 | €6.75 | Shop Ad, affiliate link |
| Keystone couplers, 10 pack | 1 | €14.36 | Shop Ad, affiliate link |
| Patch 0.25 m, 10 pack | 1 | €12.85 | Shop Ad, affiliate link |
| Patch 2 m, 5 pack | 1 | €11.09 | Shop Ad, affiliate link |
| Switch 8-port Cudy GS108U (USB-C powered) | 1 | €18.05 | Shop Ad, affiliate link |
| USB charger 50 W, 5 ports | 3 | €9.52 | Shop Ad, affiliate link |
| OULARA COB USB strip 2 m (model glow) | 6 | €21.17 | Shop Ad, affiliate link |
| OULARA COB USB strip 1 m (one per blade, up its rails) | 4 | €14.11 | Shop Ad, affiliate link |
| XT60 1 m extension leads for the upper tiers (chained) | 4 | €11.09 | Shop Ad, affiliate link |
| M3 screws, 300 pcs | 1 | €14.05 | Shop Ad, affiliate link |
| Translucent PETG 1 kg (eSUN transparent orange) | 2 | €12.37 | Shop Ad, affiliate link |
| Opaque PETG 1 kg spool (eSUN black, budget; sold as a 4 kg bundle) | 14 | €9.07 | Shop Ad, affiliate link |
| Total, without boards | €662 | ||
Prices with VAT as shown in October 2026. Shipping, glue and the boards are not included. Also not counted, if you do not own them: a multimeter (about €8.56) and a power strip (about €15.12).
Budget black PETG.
Drives: every board keeps the drive its laptop came with (system only), so there is nothing to buy. A board bought without one needs a 256 GB M.2 2280 drive (approx. €56). Optional, not in the total: one shared disk of 1 TB or more for the render manager's shared folder, on the desktop board in the drawer, in its M.2 slot. Reuse an old one, or buy a 1 TB M.2 2280 drive for approx. €136–146. Drive prices are approximate (October 2026): check before buying.
No printer yet?
To print it at this size: 14.7 kg of PETG. Add 10% for waste and test pieces and that is 17 spools of 1 kg, approx. €238–323 with the PETG below (the shopping list above already includes filament). Print time, estimated: about 761 h with the standard 0.4 mm nozzle (Ender-3 V3 SE class), 476 h with a 0.6 mm nozzle.
Print times are slicer estimates (OrcaSlicer) and may vary by ±15 %.
Advertising: the links in this list are affiliate links. If you buy through them I earn a small commission. The price for you does not change.
As an Amazon Associate I earn from qualifying purchases.
Printers that take every part (bed 220 × 220 mm or more): Creality Ender-3 V3 SE (€169) · Bambu Lab A1 (€259) · Bambu Lab P1S (€379)
PETG: Elegoo PETG Pro, 1 kg (€13.99/kg) · Bambu PETG Basic, 1 kg with spool (€18.99/kg)
Prices as shown on each shop's own page in October 2026. Shipping and the final VAT are added at checkout.