Instructables

Plywood Shop Cart made with CNC Router

Picture of Plywood Shop Cart made with CNC Router
Here is a shop cart  that is constructed from 3/4 and 1/2 inch plywood.  The parts for this piece are cut on a CNC router.  

I decided to build a set of shop carts from the scraps of various projects.   The carts are very handy, as they can be easily pushed out of the way to make room to work on large pieces.

This is the first cart in the series.

I made it at Techshop: http://www.techshop.ws

 
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Step 1: Materials and Tools

Materials

(The exact amount of plywood will vary based on your cart size)

3/4 plywood -  for the tray sides and legs    I cut this from scrap, but you should be able to cut all from a 1/2 sheet.
1/2 plywood - two rectangular sheets for the cart trays-typical sizes are 18x24 and 24x36 -less than  1/2 sheet
1 inch coarse pocket screws - 12
3 inch fixed caster wheels - 2
3  inch swivel caster wheels -2
mounting screws and washers for the casters- 16
wood glue


Equipment

CNC router

Any  plywood friendly 1/4  router bit-  this is a shop cart - not worried about tearout on the cut..
Pocket screw jig and driver
brad nailer
clamps

Step 2: Design

Picture of Design
1-2-ply.jpg
The trick with a shop cart design, especially a smaller one is  stability.  Larger wheels are really nice for uneven surface but can contribute to a lack of stability.

I researched dimensions for shop carts on the web with 3 inch wheels and used this for my starting point.  The typical tray sizes were 18x24 and 24x36 inch.

I wanted to make a very strong cart that was supported  and locked in place by the plywood itself, and not reliant on fasteners that  could loosen over time.  This required a generous amount of large interlocking cutouts, tabs, and full mortice and tenon joints.

I ddi not want any handles on the carts, so that multiple carts could be packed tightly together is a small shop.


Step 3: Cut

Picture of Cut
This part was easy- just put a 1/4 bit on the router and ran the files for all the pieces.