From the Loftsmith community

Small-block Chevy crankshaft with oil passages

A little crankshaft for the shelf, the desk or an engine build you're putting together. Counterweights run along the shaft, a bolt flange sits at one end, and the oil passages are modelled in. Change the overall length or the oil passage width to suit your project.

2 parts · 13 g · 100 × 27 × 27 mm

Grey crankshaft with counterweights along its length and a round bolt flange at one end
Loading the 3D view
Loading the 3D view
No adjustable sizes

Ask for the sizes you want to tweak, e.g. “make the width adjustable”.

Change it in the Studio

Parts

  • crank-top · PLA · Flat split face down

    Glue to crank-bottom with 1.75 mm filament pins in the 5 main journals

  • crank-bottom · PLA · Flat split face down

Print settings

Layer height
0.12 mm
Walls
3
Infill
20%
Supports
None
Notes
Print the halves flat face down.

Hardware

  • 5 × 1.75 mm filament offcuts as alignment pins · About 7 mm long, one per main journal

Assembly

  1. Press filament pins into the main journal holes of the bottom half.
  2. Glue the top half on, matching the pins, and clamp until set.

Good to know

  • The analyzer still flags about 10 thin ledges (0.7 mm) along the drilled passages and the seam. They are visible slicing marks, not weak spots. Lower the Oil passage diameter slider if they bother you.
  • The 1.2 mm oil holes may need a drill or pin to clear after printing. They are drilled at an angle, so the printer bridges them as it goes. Check one passage by pushing a thin wire through.
  • I haven't printed this, so the pin fit is untested.
I printed this Remix

Comments