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After all was said and done, it appears unlikely i will build the EVO.

i'm seriously attracted to the Kronus Robotics KRMx02 CNC Router.

It is a proven design.

I'll buy the builders guide...

The hardest material I expect to cut will be red oak and most of the time The machine will see Baltic birch or apple ply.

Your response took a lot of time and effort.

I appreciate that a lot
...

6000 series aluminum plate, 1/8 to 1/4-inch thick.



Am I to assume then that the bigger steppers are chosen to manage the mass of the gantry or the larger, heavier routers?

I have about one...

I am really pleased to learn that the floor plate with all those "T" slots is an 80/20 product.

I'm building a 4 x 4 EVO and considering using 80-20 extrusions for the frame.

Now that I know...

Has anyone entertained the idea of putting compression springs under the router fixture to take some of the weight off the stepper?

Thanks

Art

I am about to order the steppers needed to drive my 4 x 4 EVO, my very first router.

I don't want to waste money over-designing or overbuilding the machine but at the same time, i do not want to...

Your rude allegiance to antiquity says it all. It's going so strong it didn't even make minor mention on the popular list.

L.J.

That four blade copter would drive my cats crazy but looks like an easy build!

What I am interested in is the name of the manufacturer of the fixturing plate you use for your hold-downs.

Thanks...

I am concerned at the possibility of debris from the cutting action falling onto the rack.

I shared my concerns with a retired machine designer who worked for Hurco. I asked if I might prevent...

The new hybrid 4 x 4's router bed fixture is separate from the support frame below, and while it benefits structurally from being bolted to the frame below, past design experience suggests that...

That is encouraging Joe, thanks for the prompt response. I've not heard of the "smooth stepper". I'll look it up.

Art

Thanks for the prompt response John. I'm new to stepper technology and need support.

What you wrote is encouraging.

Thanks

Art

I've been building composite parts for 35 years for use in many disciplines, from telescopes to aircraft.

Precision forming of the structural foam cores has always been time consuming, especially...

I am building the electrical system for a Joe’s Evo 4 x 4 router. I plan on using the rack and pinion option with 400 oz-in steppers.

I don’t know how many driver stations are available on the...

I've spent 35 years making composite parts but never cut them on a CNC router. I am about to start!

The most comprehensive source of books, videos and materials is Fiberglast.

Fibre Glast
95...

Wait... I thought SolidWorks was downgraded CATIA.. just like Solid Edge is downgraded NX



Wow! Somebody finally got it right!.

In the early 90's, Jon Hirschtick and Mike Payne were with...

If the lure looks like so many others I've seen, it is a simple a mold to build.

It's not likely to be machined however. Carve a carbon electrode in minutes and burn a ten cavity base in a few...

I have been using Solidworks for 18 years and have never seen two 3d models from different parent software in a single part file. I'm not even sure why someone would want to.

As a general rule I...

Hello Harry

Over the last 35 years I've built many parts from advanced composites including landing gear struts for aircraft.

Vibration dampening is a natural with these materials and a...

After 35 years of doing machine design I've learned that people who are unfamiliar with material properties are inclined to add mass. In their uncertainty, they think that by doing so, they are...

Louie wrote: ""You should be able to get appleply in 3/4" nominal thickness (13 ply)"

I am sure I can Lou but why would I want to?

Half inch Apply Ply, while lighter than half inch MDF is much...

To all who responded to my request. . . . thanks!

MDF is, in my opinion, not really wood. It's used because it's cheap. Its density, compared to real wood, is heavy making things made from MDF...

I have several machines in my shop that require variable spindle speeds and the ability to change speeds on the fly without having to stop the machine and change drive belts & pulleys.

I've used...

I am so pleased to see people address weight and geometric rigidity and the effects of mass properties on stepper size and life span.

IMO, weight that does not do any work is bad engineering and...

Joe's web site points people over here to CNC ZONE to obtain the free documents needed to build the 2006.

I have tried to find the place where they can be downloaded from but without success.
...

My biggest concerns using MDF are:

1. It's very dense and needlessly heavy for such a poor structural material, compared to Baltic Birch plywood.

2. The effect of changes in geomery caused by...

CADkey went bust because it simply could not keep up with true 3D software.

It was only a wire frame program and while it was still popular with the mold designers as recently as 2008, most all...

In 1982 I was appointed the Director and Chief instructor of an Authorized AutoCAD training center. In 1993 I jumped from 2D design to 3D solids when I started using PRO Engineer. It was powerful...