Re: seeking forgiveness of the Packard GODS

Posted by Fred Puhn On 2013/10/29 10:18:13

3D printing exists now. The problem with it is cost. It isn't just the cost of the printing. Here is what you need to produce a part using an existing part:
1. Get an existing part to copy.
2. Use a metrology system to measure the part in 3 dimensions and produce an electronic file of the geometry.
3. With a CAD system fix any geometry problems needed to smooth everything out and make it correct.
4. Put the CAD file into the 3D printer and make the part. Hopefully the part is not structural.
5. Finish the part (chrome, paint, final machining if needed.

The cost of the high tech equipment and the labor cost of the trained operators is very high. I have already made some simple parts this way. I had a structural part (2 radiator brackets) so I printed in plastic to make patterns for aluminum castings. I got the help of an engineer who did the CAD work on his employer's system. I did the original design drawings and also did the final machining in my machine shop. I also did some pattern work to help the foundry. I had to pay for the 3D printing and the castings. The results were great for cast parts. My out of pocket cost was only around $200 but the labor cost would be several thousand if I had to pay for it.