
Draft for community review
A pump-fed sluice, built from the stream up.
A 3-inch tube sluice on an adjustable stand, run by a small bilge pump. This is a membership in a community that is still perfecting the build.
Still from the builder's demo video, 0:08.
What you are joining
The design and materials are being revised. Members get every update, the full version history, and a direct line to the builder.
- Today
- A working build, photographed and documented, with several measurements still marked as unverified.
- Every update
- When the design or parts list changes, a new version is published and you get an email.
- Version history
- Every earlier version stays readable, so you can see what changed and why.
- Direct line
- Comment on any page. The builder answers in public or privately.
The demo run
- Pages in the guide
- 0
- Parts on the list
- 0
Use the buttons below to jump to each stage of the run.
The run, in five stages

Stage 1 of 5video 0:17 Setup
Where the sluice sits, how the stand is leveled, and how the pump and hose are placed in the water.

Stage 2 of 5video 2:01 Power
A small battery and a speed controller drive the bilge pump. The video shows the controller setting used on the day.

Stage 3 of 5video 3:00 Running material
Shoveling into the top bucket, letting the classifier screen out the oversize, and keeping a steady feed.

Stage 4 of 5video 4:42 Cleanout
Shutting the pump off, lifting out the silicone mat and the moss cartridge, and washing them into a tub.

Stage 5 of 5video 8:26 Results
Panning down the concentrate. What the builder recovered in this one demo run, shown as it was.
What is in the guide
0 pages and a parts list of 0 items, as of version 1. A few pages show a partial preview. The rest unlock with membership.
Join the build
The design and materials are being revised. Members get every update, the full version history, and a direct line to the builder. Your access covers the current guide and each new version as it is published.
$30$21
Early adopter – 30% off