Pattern Making for the Mechanically Challenged

Fighting the birds, all most finished....

 

Not yet, going to print them all at the same time.

 

Got tied up with work, then had to get new tires on truck yesterday. Funny how every time I take my a vehicle to NTB they all ways need brakes and rotors?? Said my brakes are less then 2mm and the rotors are under DOT specs. I just replace all my brakes and rotors last year, do I even bother to pull a wheel and check them now? I think not.....
Any way here is the bird coin....

 

and the jet coin....

 

Last one....Time to start getting them ready to print.....

 

Ah hell, forgot this...

 

Started the print a few hours ago. The print bed just now go up high enough to see nothing was there....Going for round 2 now....
Also decided to make the coins 2" in diameter. 1.5" is just a bit too small.... printing just one coin at a time right now, at a .025 mm layer height it's going to take over 8 hours.... and at least 3.5 hours before the bed is high enough to see if it stuck this time....

 

Pretty sure it popped off the fep this time like it's supposed to... heard a pop similar to what it sounds like when I tap the fep. Still will be crossing my fingers...

 

Hot off the press....

 

.170" for one half, can be lessened easily if you would like.

Yes, going to raise them a bit higher so they are more noticeable. Keep in mind selective polishing will make them show up better on the casting

Im still testing things, printing the next coin laying flat. Tilting on an angle helps lessen layer lines on angled surfaces, but as the height off the print bed increases, so does the print times (drastically!)
laying the coin flat I can print them in 56 minutes, but it gets a bit of a "elephants foot" along the rim where it contacts the bed....

 

I was thinking about joining the two coin halves and adding an in gate to them with a follower to separate the coin at the parting line...
The in gate would be the support while printing as well...
They are pretty thin to be adding dowels and such into, sticky wax on a wood dowel would work to remove the halves, or join them together... keep in mind resin prints are brittle.

 

But will they print being totally vertical??
Might still have to print in halves and glue them together... dunno...