Pattern Making for the Mechanically Challenged

Thanks, now i just hope this printer works
Starting on the D coin now...

 

This one went quick and easy....

 

Yes, plus it make it easier to print that way...

 

Had to separate the text into two lines for this side, now I think it needs something at the bottom???

 

Yea, I keep in mind the fact that you will be sand casting these and try to keep things so they will easily pull from the sand. I could very easily over do things in a cad model or print that would not be able to be replicated in the casting process... unless you switch to lost wax but even that has its limits especially when it comes to text.

 

I actually model the coins larger than the finished print will be. Then scale things down for the print. Stl files are composed of triangles and when a small print is scaled up these facets can show up in the print, and vise versa...
I printed the one coin on my FDM printer at 3" and 1.5" diameter to get a look at them. The coins are built up assemblies and my slicer took them apart and caused some errors so I'll have to use the "make solid" feature in another program before moving onto the hi-res prints.
But this should give you some idea of what's to come...

 

Yes.. these are at .1 mm layer heights. The 3" one was printed flat, and the 1.5" one was printed on a 22' angle. When printed on the resin printer they will be at .025 mm layer heights....not sure how I will orient them just yet...

 

ok this one is pissing me off, it wount allow me to add draft to the funky figure for some reason... oh well, tomorrow is another day....

 

I figured it out, now I'm going to bed...

 

I win!!! This kind of thing can be a pita. I had to take the photo and put it into inkscape (an art program) and have it color trace the figure, then export it as a dfx file, copy and paste the sketch into the modeling space, correct some errors (this was what drove me nuts) extrude it into a shape with draft, then use the boolean assemble to put it on the coin.... Phew glad that over.....

 

Its not that bad, just been some time since ive had to do things this way and I forgot how to do it so I'm having to re learn. This is a good skill builder Next one will go easier...Plus I learned a couple new things.