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Posted by ZroDesigns | Apr 07, 2015 @ 04:20 PM | 2,055 Views
Well this custom order for a machine is a first for a few things... First international order. First Belt driven system to accommodate size of machine (2mtrx1mtrx1mtr cutting area) and speeds of 2mtr per minute. First plug n play system... machine, steppers, controller, power supplies for both controller board and hotwire, set up and preconfigured to run with Mach3.
Posted by ZroDesigns | Jan 24, 2015 @ 02:05 AM | 2,204 Views
Just finished another custom build for a fellow RCGer. Excited to see what he's gonna create with this!
Posted by ZroDesigns | Dec 20, 2014 @ 11:25 AM | 2,188 Views
Well the machines from here on out will not have thrust bearings and let me explain why.
With CNC hot wire foam cutting machines the speeds are relatively slow, there is no drag from the wire in the foam which could be seen at the threaded rods, and complete reversal of direction is hardly ever done and when it is it's done again at a relatively slow speed. There really is no need for thrust bearings in this type of machine.
My prototype machine had none other than a piece of plastic tubing over the rod end that slipped into a bracket to support it, and worked beautifully but I figured that was a bit too "Red neck" for most people so I started to incorporate actual thrust bearings in the machines I was selling.
Not to mention that they are NOISEY and contribute to quite a bit of a load in the system.
Since this will cut a bit of the cost I'll be passing on the savings to the buyers and the price of the machines will reflect that... as soon as I get done retrofitting them.
Posted by ZroDesigns | Apr 15, 2014 @ 06:54 PM | 2,134 Views
Custom machine ordered by another RCG member.
Posted by ZroDesigns | Apr 10, 2014 @ 11:47 PM | 2,638 Views
Here's what you receive from now on. Bases and towers assembled, bearing carriages adjusted, leadscrew/nut and thrust bearings assembled and adjusted.
You supply steppers, drivers, breakout board, limit switches, power supply and hotwire setup.

$350+SH in the US
Posted by ZroDesigns | Apr 03, 2014 @ 09:52 PM | 3,244 Views
Top of table VS side of table mount.
Posted by ZroDesigns | Mar 30, 2014 @ 09:02 PM | 2,737 Views
Tower bearings assembled and adjusted. Tomorrow I'll start on the stepper mounts and leadscrew assemblies.
Posted by ZroDesigns | Mar 30, 2014 @ 01:46 AM | 2,810 Views
Hoping to have the first two CNC machines ready to ship later this week. Who wants one? Reasonably priced and I can build custom sizes.
Posted by ZroDesigns | Jan 19, 2014 @ 02:08 PM | 2,234 Views
Putting the business prep aside for a bit. Going to visit friends in Newport Oregon the end of March for a week. Perfect opportunity to pull out one of my old projects to put together the prototype for the coast. 96" Pitcheron with a full flying stab added, carbon socked foam fuse, Bling, carbon foam cored wings and stab. Possible "thing that goes up" and split rudder aribrake if time permits.
Posted by ZroDesigns | Nov 23, 2013 @ 07:29 PM | 2,755 Views
I've been working on designing a professional grade CNC Foam Cutter for the last couple years. Heres a couple pics of one side of the machine. Unfortunately the rest of my pics died with my HD. I tore down the machine after I was satisfied that it met my expectations. I'm in the process of fine tuning the individual parts and building jigs to be able to to start producing it.
Posted by ZroDesigns | Dec 15, 2012 @ 05:46 PM | 2,731 Views
For a few years I've wanted to do a VS Sailplanes VMax scaled down to a 60" wingspan. My wife finally kicked my butt in gear, after listening to me all this time talking about alot and not doing much.

I like to use laminated layers to do my plugs because each layer gives me a guide to sand to. I can finish a plug with almost perfect symmetry and with out the use of templates quite easily and quickly this way.

I used to do my laminations vertically with copies of left to do the right side but you can easily end up with a bend in the plug, so now I do it this way, horizontally. Bend from side to side is less likely, however you now run the chance of puting a bow in the plug longitudinally, but I think that is alot better to deal with than an bent fuse.


1. I modeled it up in Rhino.
2. Placed horizontal planes in 1/8" increments the height of the fuse.
3. Laid in some 1/8" rods for alignment purposes.
4. I then used the intersect tool which gave me the outline of the fuse at each of these heights.
5. Next I took each of these layers and spread them out on 1 plane.
6. Labeled each part. Set this aside, oh and made a copy.
7. Laid out a plane that would be the stock that would be laser cut and made copies of these.
8. Start nesting the outlines from the intersect onto the stock planes ( I had to do staggered cuts to the length of my pieces to accommodate the available stock and cutting area of the laser. Make sure you...Continue Reading