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3d printer Rally Pac

26K views 76 replies 37 participants last post by  timthechef  
#1 ·
Since it's been a long winter I finally got some time to work on a pet project of mine. I bought a 3d printer last spring and after much trial and error I've been able to get my version of a low profile rally pac designed.

https://dl.dropboxusercontent.com/u/22482236/RallyPac/lowpro_rallypac_new_front.jpg
https://dl.dropboxusercontent.com/u/22482236/RallyPac/lowpro_rallypac_new_bottom.jpg
https://dl.dropboxusercontent.com/u/22482236/RallyPac/lowpro_rallypac_new_side.jpg

I print it in 4 pieces and then use ABS cement to glue the main housing together. It's not the best solution but it's OK for now. If I ever get a better (faster/more reliable) printer then I think I could print the main section as one unit but for now I do it this way to minimize loss when something goes wrong and I have to start over.
 
#11 ·
These are great for prototype parts. Engineers have to be careful/aware of how you intend to make a the part in production. Big advantage is mold is not needed.

Some day this technology will probably be fast enough/part for production parts.

We had one in our lab, it was hard to keep people away from playing with it!
 
#15 ·
You can make parts that there is no practical way to make with conventional manufacturing process.

The various injection molds for the Rally Pac may come to $50,000. If 10,000 Rally Pacs were made that's $5/Rally Pac. People often question the lousy quality of repo parts. The repo part maker usually doesn't have $50,000 for tooling for a part that may sell 100's, 1000s on the high side!
 
#28 ·
that's a great deal--you could probably charge a bit more for them and still have lots of demand.

If you decide to sell these, be sure to tell people they will want to fill/sand/paint them before use. Some peeps may think they are getting a piece ready to install. Depending on the material properties you may also want to state that these are softer than the casted parts available today for considerably more money.
 
#20 ·
I'll try to get some more pics with gauges done this weekend for everyone. It's supposed to be warmer this weekend for once. The polar vortex has finally left (for now).

It takes about 4.5 hours to print everything for one unit. I have to stay nearby and keep an eye on the printer to make sure the filament doesn't jam (rare) or the piece comes loose from the base plate (the most common problem) and screw everything up. I think $50 is a fair price for now.
 
#22 ·
Do you mean the other style that says rally pac across the middle? It would have a middle piece like 22GT posted earlier right?

If so, then I might be able to do that. I'm self taught on the 3d drawing stuff so it might take some time but maybe I can just expand on what I already have.