Manually sifting dirt for arrowheads on a 4x8 table got tiring real quick.
This project started as a few lines drawn in the sand over the Christmas weekend while using that 4x8 table.
The idea was then transferred to high quality blueprints drawn on the shop refrigerator door in soapstone.
After 2 weeks of working off and on, mostly waiting for bearings, pulleys, heim joints, etc. we ran the first test session.
The test session pointed out a couple of changes and improvements that needed to be made but it worked better than expected and could sift thru an entire front end loader bucket in less than minutes - with wet dirt!
We hauled it down to the dig site yesterday and ran it for about an hour and found one nice point and some partial bird points in the secondary screen.
This was in the second bucketful of dirt.
Work in progress...
Drivetrain mockup while waiting for correct pillowblocks and small pulleys.
If you look right over the gas tank, you can see some of the diagrams and figures on the refrigerator door.
Setup in place at dig site.
Searching the secondary 1/4" mesh for bird points and small chips that make it thru the upper screen.
My nephew has the next 3 days off and I'm sure it will see much use.