Replies to This Discussion

Permalink Reply by Dustin on June 24, 2012 at 8:10am

Thank you Monroe

Permalink Reply by Dustin on June 24, 2012 at 12:13am

Hi.  This project sounds great.  I just got through reading the forum on Design Ideas... wasn't clear on one thing.  Are we talking about XY movement with a Z - height bringing down the bit into the material.  Or something that can tilt, come in at an angle, etc. 

 

Among other things.  I'd like to be able to make stuff like the motor mount here:

http://www.ebay.com/itm/4-set-New-X450-Quadcopter-Frame-Real-Carbon...

 

I can usually get good prices from Newark.com and AlliedElec.com.  Component prices are usually very good.  2nd party items, not always, but sometimes.  If you have any part numbers you want me to lookup, please let me know.  I know there was reference earlier to cutting and/or not cutting.  So, what will this be able to do?  I'd love to have a water jet for cutting holes and squares in relatively thin pieces of metal.  If there was a piece of wood below the metal (so that you bit didn't jam into your bed), could this also be used in lieu of a waterjet for such odd jobs?

 

I live in NM.  Wood dries and and warps here.  I assume we are still talking about a steel bed?  I'm not too late to get in, am I?

 

 

 

 

 

Permalink Reply by Ellison Chan on June 24, 2012 at 7:43am

Early stages yet.  Definitely not too late.

The idea is to be able to make these kinds of parts with this CNC machine.

Currently I'm printing my mounts at Shapeways.com in plastic.

Permalink Reply by Dustin on June 24, 2012 at 8:10am

Are they strong enough to fly with when made from printed plastic?  My understanding is that printed plastic generally has 30 percent of the strength of regular plastic.  I have some Avroto 2814 motors with a 44mm  hole diameter for which I have been searching for mounts.

Permalink Reply by Ellison Chan on June 24, 2012 at 8:35am

Flies and handle crashes perfectly.  Check this out.  The airframe hub is made from printed plastic, as well as the mounts:

I was flying this frame:

Permalink Reply by Taylor Davis on June 25, 2012 at 11:45pm

Count me in for sure.

Permalink Reply by Dustin on June 26, 2012 at 6:18pm

Here's some interesting links:

http://hacknmod.com/hack/incredible-100-arduino-based-cnc-machine/

http://hacknmod.com/hack/mini-cnc-router-complete-plans-and-instruc...

http://hacknmod.com/hack/build-a-diy-3-axis-cnc-mill/

The last one shows the milling of a circuit board.

 

... and as laser CNC

http://hacknmod.com/hack/make-300mw-burning-laser-cnc/

 

Permalink Reply by John Thomson on July 2, 2012 at 1:24pm

Very interesting project, count me in.

My current preference is a 24x24 work area or less for PCB isolation routing/milling, and anthing else it can do.

I am considering a light steel moving platten on  ground bar rails and linear bearings in own trucks on steel fabricated base frame, with bolted on three piece steel gantry with ground bar rails. Z axis steel?aluminum transition plates with ground bar rails. Trapezoidal screws, DC brushed motors (ex auto). Controls, buy or assemble on proven PCB. 

Is the project a goer regarding the electronics and programming ?  A well written set up manual will be critical.

Time for a options matrix of component costs ?

Permalink Reply by Ellison Chan on July 3, 2012 at 3:47pm

What program are you using to do the drawings?  I use blender to do my multicopter frames and it can export STL. But, it's not exactly a CAD program.

Permalink Reply by Kevin Bouchard on July 4, 2012 at 3:58pm

Don't despair! My last exam is this Friday,  I'll most likely have time to pick this up again on the weekend and make sustained progress afterwards. Of course, another mech. designer wouldn't hurt!

We absolutely need to start planning the servo control system. A lot of the money for this CNC is gonna go there, so we need to list all the necessary components before we think about prototyping it. I think a specific thread in this discussion forum would be in order.

Permalink Reply by Ellison Chan on July 4, 2012 at 4:08pm

Actually, we shouldn't be discussing specs in this thread.  There's already a thread for that in the "Brainstorming" discussion.

Permalink Reply by R. D. Starwalt on July 3, 2012 at 4:09pm

Ok Ellison,

There has been no repsonse to my email from the fellow listed in the frame with the SMD UHU pcb. I am not sure how long we should wait and suspect the Gerber files in question were given up to public domain by this time. There was not a disclaimer on the page regarding maunfacturing rights. I am still plodding along with Eagle and getting better but the issue again is having the device package needed to be correct when the program is asked to make a pcb.

On the other hand, do you think your contacts could use a 'rough' Eagle schematic of the UHU? If they polish it up, it is better than starting with a blank screen.

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