Bedrock Cleanup Brush – Gold Prospecting Tool

A brush designed for cleaning bedrock and crevices while gold prospecting. The stiff, closely spaced tines are optimized to scrape and dislodge compacted gravel, sand, and dirt from uneven rock surfaces—helping expose gold-bearing material that’s often missed by standard tools. Stop using your hands!

The low-profile design allows you to work efficiently in narrow spaces, while the flexible bristles provide enough give to conform to irregular bedrock without snapping under load. The key ring hole allows it to be clipped to a backpack or gear belt with a caribiner.

Recommended Material: Nylon (PA) for maximum durability and flexibility

(PLA works for light use but may become brittle over many uses so it is not recommended)

Designed for real-world field use—simple, effective, and easy to print. Print it laying flat on the tray to make the tines stronger.
 

Example Printer: Creality Ender 3 V3 SE
Orientation: Lay flat on the bed (do NOT print as a tall tower or rotated on edge)
Baseline: Cura “Standard Quality”

PLA – Settings Delta

Material: PLA

Walls

• Wall Line Count: 4–5
• Wall Thickness: 1.6–2.0 mm

Top/Bottom

• Top Layers: 5

Material

• Printing Temperature: 210–215°C

Speed

• Print Speed: 40–60 mm/s
• Outer Wall Speed: 25–30 mm/s

Cooling

• Fan Speed: 50–70% (after layer 2)

Support

• Generate Support: Enabled
• Support Placement: Everywhere
• Support Overhang Angle: 50–55°
• Support Density: 10–15%
• Support Z Distance: 0.2 mm
• Support Interface: Enabled
• Support Interface Thickness: 0.6–0.8 mm

Build Plate Adhesion

• Brim: 10–15 lines

Travel / Advanced

• Z Hop When Retracted: Enabled
• Minimum Layer Time: 6–8 s

Nylon – Settings Delta

Material: Nylon (PA)

Walls

• Wall Line Count: 4–5
• Wall Thickness: 1.6–2.0 mm

Top/Bottom

• Top Layers: 5

Material

• Printing Temperature: 250–265°C
• Build Plate Temperature: 70–90°C

Speed

• Print Speed: 30–50 mm/s
• Outer Wall Speed: 20–25 mm/s

Cooling

• Fan Speed: 0–20% (max)
• Fan Speed Layer 1: 0%

Support

• Generate Support: Enabled
• Support Placement: Everywhere
• Support Overhang Angle: 55°
• Support Density: 12–18%
• Support Z Distance: 0.25 mm
• Support Interface: Enabled
• Support Interface Thickness: 0.8–1.0 mm

Build Plate Adhesion

• Brim: 15–20 lines

Travel / Advanced

• Z Hop When Retracted: Enabled
• Minimum Layer Time: 8–10 s

Notes (Nylon):

• Dry filament before use
• Use adhesive (glue stick / Magigoo / garolite)
• Enclosure recommended