Monday, September 20, 2010

Project 3 - Detailed Design

I have spent a few more hours adding detail to the design.

Full XYZ Router Assembly
YZ Carriage

Most of the parts will probably be purchased from McMaster Carr.  Here is a list of the current parts (not the final parts list)

Bronze Flange Bearing 
6338K437 @ $2.80 each (8 needed) - 1" ID
6338K421 @ $1.01 each (4 needed) - 1/2"ID
Threaded Rod 1/2"-13
90034A033 @ $2.67 / 2' (2 needed)
90034A440 @ $1.89 / 1' (1 needed)
Weld Nut 1/2"-13
90611A500 @ $6.93 / 10 (3 needed)
Lag Screws
91478A628 @ $14.28/100 (? needed)
Precision Rod
To be determined - need 1" and 1/2"
Wood (to be purchased at local hardware store)
amount to be determined

Just with the items listed above, the cost will be about $55.00.  That is without the wood, another $20, and precision rod, about $30 for the X and Y (4 total).  I may have to go with regular bar-stock instead to reduce the cost.  I'm starting to think that 1" rod for the X and Y axes is too expensive (maybe 1/2" is better).

There are still a number of things to figure out, but I made a lot of progress today.  Another day or two like this, and I should be ready to buy the online parts (depending on my cash-flow).

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