Subtraction Week 4 – CNC Laptop Stand

February 25, 2016 / By

February 25, 2016 / By

Planning

I looked through all of the joints on offer and wanted to try a dovetail. Though I figured out how to do this in illustrator eventually I went for a simpler version without the tapered edge. I don’t think it qualifies as a box joint but it’s pretty close.

Screenshot (31)


To my detriment, I just cut the exact inverse of the piece because I couldn’t wrap my head around tolerances until I had actually cut out the pieces on the CNC, this resulted in one failed job and after a -0.2 inch adjustment on each side of the “inner” part of the joint another that worked surprisingly well and gave me a new found appreciation for the accuracy of the cnc. I didn’t think that I would see a difference at first.

Materials

0.68 – 0.72 inch thick plywood which I am fast growing to appreciate as a material.

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Set-Up

I ended up using two different off cuts that were lying around the shop on two different days. Here’s the Set up. After having to go back and forth to the Mastercam station a few times the process finally stuck in my head.

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Process

A relatively pain free CNC job totalling about 29 minutes for the base and two “legs” the first time, then 5 minutes per “leg” on the second piece.

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Finished Product

Pretty happy with this. Made me realise how good plywood can look with just a bit of light sanding. I wanted to angle the legs so that they would be, in effect, isosceles triangles and would tilt the laptop forward but was worried about the joints fitting at an angle. Now that I can see how the joints fit I might do a quick redesign and make it this way in my downtime. I’m thinking of adding a finish of some sort as I don’t have much experience doing that yet. I’m thinking about how to make the joints fit together better and adding extra support. I do sort of like the fact that it can be taken apart for storage now though. I may keep this feature.

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