for his video production class.
how to make a skateboard.
this was cutting it close.
Where'd he get that from?
and found a concrete form method.
but I tried to stand back
as much as possible.
The grease in the gears...
He learned why math is important.
Using a concrete volume formula
of 133 lbs/cubic foot,this took 4-90 LB bags of concrete.
The bottom had some aeration on the edge.
We smoothed the surface with bondo.
Some people used weights or clamps,
most used a traditional hydraulic press.
We experimented with an easier method.
Basically a frame,
with 6 drop down attachment points.
Big bolts and nuts would squeeze it together.
finishing this part by the last weekend,
project due on thursday!
smoothed the mold out a bit better,
so when he got home,
we'd be ready to laminate.
the outer layers the second day.
Instead of wood glue we used epoxy.
We found 1/16 maple to be a rip off,
almost $50 shipped per board!
There's a monopoly on it.
at $16 per 4x4 sheet,
enough for 2 boards!
This was a 3-ply.
I sanded down the glued surfaces
with 40 grit on a DA,
to thin them down a bit,
so 4 layers would be closer to 7/16".
and assembly while I was out.
Now he's got a side business for summer!
I'll have to get his video in here...