Building something using my 3D printer

[ArchCalc]

Pattern for lead weight

IMG_2024-06-09-214138.jpeg (51.47 KiB) Viewed 2560 times

.

The picture is of a pattern being laid down by my 3D printer. The lattice infill is added by the program automatically.
I use Shapr3D.
So when the pattern is done, I will put it in a sand mold to pour lead into. Never have done this before.
The hotend extruder is out of focus because I took the photo as it was in progress.

[agor95]

Hello ArchCalc

You get me thinking; Does a 3D printer exist that uses wax?

So it would used cheap warm wax being extruded into a cold environment.

Then just place the wax into sand and use the lost wax method.

[Update] https://pick3dprinter.com/wax-3d-printer/

Regards

[ArchCalc]

Thanks for the idea. I looked that up. I need the weights to be solid though and to fit in the allotted spaces.
What could be done maybe is make the entire pattern from whatever wax is used in the lost wax method. The weights are small but have to be of accurate mass. Accurate. Like what a 3D printer can do.

[agor95]

Hello ArchCalc

It is good to bounce ideas around in a forum. You can find yourself bounced into a different track that you were expecting.

I find it best to look for possible designs where accuracy is not required.
Dynamic systems that work towards the desired operation path.

That way the initial conditions become less important.

I assume that is one reason for large devices. As the imperfections get averaged out.


Regards

[ArchCalc]

Hello.
Enclosed is another part for my PM idea. It is not a crank even though it looks similar to the axle crank on the wheel engravings.

Center Lever

IMG_8818.jpeg (30.85 KiB) Viewed 2403 times

[ArchCalc]

The long slit is for a 1/8" dia. axle.

IMG_8826.jpeg (41.38 KiB) Viewed 2354 times

[ArchCalc]

Besides Bessler, C. Wade McClusky at the Battle of Midway, has been great motivator to keep going with searching for PM.

https://en.m.wikipedia.org/wiki/C._Wade_McClusky

[Sam Peppiatt]

I've been to Midway; the Goony Birds are every where-----------------Sam

[ArchCalc]

Decided against using a sand mold.
Found a Bush's Beans can that's 3 3/16" diameter.
Washed it out, then burned the inside coating and brushed that out too. I put the can on a piece of wood on a 5lb postage scale. Hit the tare button to zero the scale, then poured the lead in until the scale read 4lb, 13oz. Lead doesn't stick, but the casting can't be knocked out. Have to cut through the rim down to the lead and use pliers to peel the can off. Like a sardine can lid.
Will use my metal lathe to dimension the weight down to 4lb.

IMG_8851.jpeg (49.47 KiB) Viewed 2180 times

[ArchCalc]

Partial assembly of the Apologia Wheel.

IMG_8978.jpeg (44.49 KiB) Viewed 1652 times

[ArchCalc]

Bessler's drawings look very similar to Leonardo DaVinci's in style and composition.