We’re now in production of the open source, Compressed Earth Block (CEB) press. Here we document the fabrication ergonomics for the first steps in the build. This is for those of you considering replication.
It took me 2 hours to build the press foot:
It took 2 hours to build the grate. Here is the grate with spacers between rebar prior to welding:
So far, the total is 15.5 hours of fabrication. If we had a hole puncher, we could probably save ourselves 2 hours of outsourced labor. So here’s our design of the hole puncher, to be built – as part of an ironworker machine:
The dxf files are here, so you can download them and continue the design if you want to get involved. This is an invitation to collaboration, starting with the wiki. First part of the ironworker is a hole puncher, and second step is metal shears for up to 12 inch wide metal, 1″ thick. The shears could save us a few more hours of outsourced labor.
There are holes on the u-channel that don’t lend themselves to hole punching, so these will be drilled using the FeF Multimachine in-the-making.
Hey, look, I found two, scrap six cylinder, in-line, 300 cubic inch Ford engine blocks in the back of the pickup.
That will be the start of the next version of the Multimachine.
Cutting out the hopper took about an hour.
If we had RepTab, the open source torch table up and running already – we could cut the 1/8″ sheet in about 5 minutes at the rated cutting speed of our 60 amp plasma cutter. So here’s a case for spending 2 dedicated weeks to get RepTab shaken down into full running condition.
In the meantime, William has been learning MIG welding in preparation for his arrival in May. Here’s a video:
He is also learning QCad, so we’ll hit the ground running on design and build of a new civilization.