Soil Mixer - Bucket Module - Build Instructions

• • work suspended on this document for now, I will return to it in the evening and tomorrow.**

As an aid, the fabricator should watch the 3 videos on the prior versions of the soil pulverizer, which can be found by searching soil pulverizer on the OSE vimeo account (or google). They will be added to the Dozuki later.

This is the fabrication plan as of March 13 2013, not documentation of a fab. The actual fab procedure will be recorded and added when the prototype is built.

Overview: The largest – bottom and back – walls of the bucket are made from a single sheet by cutting a long slit centered along the line that the bend will be along, to weaken the steel but help it remain in place, rather than cutting the sheet fully in two and then using a jig to hold the pieces at right angles while welding them back together.

The side walls are right angle triangles, so the walls will be cut from a single square sheet, cut along the diagonal.

Cut the one inch strips that line the rim of the bucket from stock using the metal worker.

The holes in the bottom wall of the bucket for the bolts from the tooth bar to pass through will be made with the torch table if we have one, and with a drill with magnetic base if we don't.

Tack the side strips on, then the top and bottom strips, before completing the weld, so the strips can rest on the other two for alignment, and so the top back of the lid has a relatively close seal, as the strip rest on top of, not below, the two side strips. This is important for slurry mixing, as that is the area the slurry is propelled towards.

Without a CNC torch table:

Cut all pieces from stock to size.

Cut the hole in the pieces with a torch.

Drill the holes for the tooth bar before bending the 1/4 in. plate the back and bottom wall is made from.

Weld the bucket together in the following order:

Cut the slit in the main 1/4 in sheet.

The lip that extends off the back is referred to as a finger. Add the triangular side pieces to the bucket, thenn cut the finger from stock or using a torch from a plate, and weld it on.

Weld the tabs that extend off the side of the bucket on.

With a CNC torch table: