All Posts By

David Burrell

Neo7CNC LED CNC Machine Can Light – Start to Finish

By | CNC, Software, Start to Finish | No Comments

LED Can Light – Start to Finish

In this start to finish project we go through the entire process from Ideal to finished part.  First we do the 3d design on the computer using Onshape.  We then CAM (create the tool paths that tell the CNC machine how to actually cut the part) using BobCAD/CAM.  Next we use a 5C collet fixture to hold the stock and test cut the part in plastic.  Finally we cut the design from 1 inch (25mm) 6061-T6 aluminum bar stock.  The lens is made from 1/8 frosted acrylic. You can tell in the pictures that this process made a big mess! The tolerances on the lens were “spot on”.  The KR33 CNC is a beast of a little machine

I polished the aluminum version and that made it pop.  It’s a nice, compact unit.  I still need to finish them and mount them to the machines.  One issue I have is finding good wire to use.

Neo7CNC Onshape

Free* 3D CAD Software

By | Software | No Comments

There is a new online CAD software that allows free use.  With Onshape you can design parts, assemblies and drawings.  The basic account is free and limits the number of projects (currently 10) you can create that remain private (only you can see them).  The rest will be public so that anyone with an Onshape account can access and use them.  They also offer a professional account for $100/month that allows all your files to remain private.

They’re also working with other OEMs to bring added functionality into the cloud based software like CAM and finite element analysis.

Check it out at http://www.onshape.com

Neo7CNC KR33 CNC Version 2 Table

KR33 CNC Machine – 2nd version – Table Progress

By | CNC, DIY | No Comments

The table has been machined and now I need to tap the 225 holes in it to 1/4 20.  They are blind holes which means they don’t go all the way through the material.  This will make it harder to tap but we’ll get there.  I did get around to counter sinking the holes at least 😐

I’ve tried out a few different taps so far to see what will work best.  The tap with the smaller neck seemed to work the best.  These are bottoming taps so I can get threads in very close to the bottom of the 0.4 inch hole.