H3C Purge Bin - Tool-Free Dock, 3 Textures

A purge bin made for the back of the Bambu Lab H3C. A small dock hooks into the rear panel right under the purge chute, then the bin drops onto it. Lift the bin off to empty it, drop it back on. No screws or glue needed. Printed and tested on my own H3C: the dock clips in solid and the bin hangs straight.

New: High Front version

Update: some of you reported that part of the purge bounces off the ramp and flies over the front edge onto the floor. So we made a new, taller version: the High Front bin. The front edge (the side with the logo) is 100 mm higher, and the side walls climb to full height right behind the back wall, so purge can't escape over the sides either. Same dock, same hooks, same textures: just print the new bin and drop it on the dock you already have.

• Front edge 158 mm above the dock instead of 58 mm. The back stays at 70 mm, so the chute and the ramp work exactly as before.

• Bin 122 x 82 x 240 mm, about 1.4 L (the original holds about 0.9 L).

• Files: a High Front 3MF per texture for the H3C in 2 colours (inlay) and 1 colour, plus a 1 colour 3MF for every printer with 256 mm build height (X1, P1, P2S, A1, H2 series). At 240 mm it is too tall for the A1 mini: A1 mini users can keep the original bin.

• The high-front pictures are renders made from the print files; real photos coming soon.

Why it is different

• Tool-free dock: two rear hooks clip into the H3C panel under the chute, where the original screw also fits (optional).

• Self-centring hang: the bin's rear tongue drops behind two horns on the dock (0.3 mm clearance per side), so it sits straight every time.

• 45 degree ramp: anything that lands on the dock slides straight into the bin.

• Exhaust-friendly: the bin's back wall stays 10 mm off the panel, so the vent grille under the chute keeps breathing. Two bottom bumpers keep the bin hanging plumb.

• Three textures on the same proven fit: DUNE (sand ripples), HIVE (hexagons that fade out toward the rim) and NINE (architectural flutes).

• NINE TOOLS badge: an engraved emblem with nine dots for the nine PrintTools. Print it in one colour, or as a flush 2-colour inlay (the H3C swaps colours with almost no purge).

• Support-free: every overhang is 45 degrees or less, verified slice by slice.

What's included

• NEW: High Front 3MF per texture (DUNE, HIVE, NINE): H3C 2 colours (inlay), H3C 1 colour, 1 colour for printers with 256 mm build height (files starting with H3C_Purge_Bin_HighFront_)

• H3C Purge Bin DUNE, HIVE and NINE, each with the dock on the same plate

• 3MF per texture: 1 colour for all printers, and an H3C 2-colour (inlay) project

• Printables: STL bin + inlay per texture, dock STL

Size

• Bin size: 122 x 82 x 152 mm (W x D x H, measured from the panel)

• High Front bin: 122 x 82 x 240 mm, front edge 158 mm above the dock

• Capacity: about 0.9 L (High Front: about 1.4 L)

• Protrusion from the panel: 82 mm (H3C needs 100 mm rear clearance)

• Dock: 68.6 x 43 mm plate, 2 rear hooks, optional original screw

• Weight: about 150-160 g PETG per bin + dock (High Front: about 190-230 g)

Install

1. Print the dock. Slide its two rear hooks into the panel under the purge chute and push it down until it seats.

2. Optional: put the original screw back through the dock's centre hole.

3. Hold the bin a little above the dock, push it to the panel and let it drop. The tongue slides behind the horns.

4. To empty: lift the bin about 2 cm and pull it out.

Print settings

• Material: PETG (Bambu PETG HF). The exhaust air can get close to chamber temperature (up to 65 C) when printing hot filaments, which can soften PLA.

• 0.4 mm nozzle, 0.20 mm layers, 4 walls, 15% infill, Textured PEI plate.

• Bin: upright, no supports, seam on the plain back wall. The original bin needs no brim; the taller High Front bin gets a 5 mm brim (already set in the 3MFs).

• Dock: printed standing on its end with an 8 mm brim (already set in the profiles).

• The 2-colour time includes the prime tower; the inlay itself is only about 0.2 g.

Print profiles

• DUNE - High front - 2 colours (inlay) - H3C - PETG: 5.49 h, 226.9 g + 4.9 g

• DUNE - High front - 1 colour - H3C - PETG: 5.34 h, 207.1 g

• DUNE - High front - 1 colour - all printers 256mm - PETG: 5.61 h, 207.5 g

• HIVE - High front - 2 colours (inlay) - H3C - PETG: 5.81 h, 211.4 g + 4.9 g

• HIVE - High front - 1 colour - H3C - PETG: 5.69 h, 191.6 g

• HIVE - High front - 1 colour - all printers 256mm - PETG: 6.19 h, 192.1 g

• NINE - High front - 2 colours (inlay) - H3C - PETG: 7.89 h, 220.8 g + 4.9 g

• NINE - High front - 1 colour - H3C - PETG: 7.71 h, 201.0 g

• NINE - High front - 1 colour - all printers 256mm - PETG: 7.89 h, 201.5 g

• DUNE - 2 colours (inlay) - H3C: 3.85 h, 177.6 g + 4.9 g

• DUNE - 1 colour - H3C: 3.71 h, 157.9 g

• DUNE - 1 colour - all printers: 3.61 h, 157.9 g

• HIVE - 2 colours (inlay) - H3C: 4.47 h, 172.0 g + 4.9 g

• HIVE - 1 colour - H3C: 4.35 h, 152.2 g

• HIVE - 1 colour - all printers: 4.36 h, 152.4 g

• NINE - 2 colours (inlay) - H3C: 5.39 h, 174.2 g + 4.9 g

• NINE - 1 colour - H3C: 5.21 h, 154.4 g

• NINE - 1 colour - all printers: 4.84 h, 154.6 g

Times and weights include the dock on the same plate (Bambu Studio 2.09).

Files

STLs per design (print orientation, Z up): <SKIN>_bin.stl (works as a 1-colour bin with an engraved badge) and <SKIN>_inlay.stl (optional 2nd colour that fills the engraving), plus dock.stl. For 2 colours in PrusaSlicer or Bambu Studio: load the bin and the inlay together, answer Yes to 'load as a single object with multiple parts', then set the inlay part to filament 2.

If this keeps your desk clean, a Like or a Make with a photo really helps. Tell me which texture you printed!

Free model. Original design: only the printer's mounting points were measured, nothing copied from other models. Not affiliated with Bambu Lab.

Note: the High Front pictures in this gallery are photorealistic renders made from these exact print files. They will be replaced with photos of the real print soon.