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I haven't done much of anything to the blacks pipes other than trying to find the straightest pipes when I purchased them. My cnc is a JGRO design that I built ten years ago. There a number of...

I've used black pipe for linear rails for ten years now and have been fairly successful in my cnc work. However, unsupported linear rails are always going to have some flex in them, so you will not...

338568Comparing version v1.58 to v.159 I ran into a problem with v1.59 where after executing a "Calculate Cleanup" on the straight bit cleanup, F-Engrave will hang on "Re-Ordering Loops". I do not...

Understand. You prevented a negative value or possible zero from being entered and my last config had a zero in it. So I changed it to a positive value and re-saved the config and then unchecked the...

337808

The default setting for the "Box/Circle Gap edit field looks to be zero (0), however zero is NOT being accepted. See attached pic.
This behavior is different than version 1.58

Yes, that is the message that is given. Looked at the general setting and the "Box/Circle Gap" entry field is red, however, the checkbox for "Add Box/Circle" is NOT checked, so I assume that this...

Been using f-engrave v1.58 for a few weeks now with much success. Just noticed there was a newer version (v1.59) available for download. Downloaded and attempted to open an existing dxf file....

Haven't posted for sometime. Still having a blast with this CNC router "thing". Made a new bracket for a Hitachi Router. Also, added side supports to the long y axis. Had to route a shallow groove...

One of the first cuts I made on my JGRO was "SPlams" Spirograph. You can download his program at http://www.cnczone.com/forums/showthread.php?p=105892

Hi Dave

Some of Joe's part measurements that are longer than the JRGO can cut:
Router end supports 33.95"~
Torsion box bottom 34.5"~
Gantry sides 30"~
Torsion box...

My JGRO has a cutting area of 29" X 15", not large enough for some of Joe's parts. I am considering some options on how to cut these larger parts, either resizing Joe's design or maybe even splicing...

David,

Switch to the DOS based TurboCNC machine controller software. Try that and see if you still have problems. Download at http://www.dakeng.com/turbo.html

Dave

David,

Swapping the motors and controller will tell you if your existing setup is the culprit. The 135oz in motors should be able to push your machine, although slower than your existing...

David,

Just disable the limit switches in Mach3. You don't have to disconnect them physically, although you can do this. BTW, my JGRO is running with 118oz in. steppers and I...

David,

Those little spikes are OK as they are the various background Windows processes. One thing that I did was to "tune" my WinXP to run Mach3. I created a little "batch program" to stop...

I have been using BobCad V21 for awhile now. I am still learning this CAD/CAM. I would like to cut some small parts (wood) without them being sucked into my dust collector. I would like to leave...

I have built the JGRO. You can see some pictures of it on my web site:
cnc.hobby-site.com/cnc.html .

Thunterman

Just completed a prototype dust collection system for my JGRO. I included a spearator (mini-cyclone) so that the larger chips won't damage the JET dust collector bags. It works fairly well! Get...

I actually have created one routed lake map using Bobcad. The lake map that I routed had only three contours for depths so it was a matter of just assigning each depth a corresponding depth in the...

I never used the dowels when I built my jgro.

Don't forget to put a coating of shellac or paint on before your final assembly. Looking very good so far.

Thunterman

Yup, I fat fingered the link. It should be http://cnc.hobby-site.com/cnc.htm

Thunterman

Five, six and eight wire steppers are wired "uni-polar". See this link for details on the motors: http://www.cs.uiowa.edu/~jones/step/circuits.html#practvr. One source for a driver for these is...

I run Mach2/3 on a HP 500MHZ K6-2+ laptop running WinXp Pro with most of the services turned off. You can find a "tuning guide" for Mach3 that will show how to disable un-necessary services and other...

I found a "cheap" trim router at the local Mernards home center. I believe the brand is "Tool Shop". It was only $28, so you get what you pay for. It's not a quality tool, but works for what I need...

Try your local small hardware store. I found 1 1/4" angle at a business called "Metal Supermarket". They specialize in small quantities of metal. You could also order on-line at ...

I also lurked for a long time on this site before posting, then jumped in and built the JGRO. Learned alot just by reading all the great posts.


I went with a "Trim router" as my first spindle....

Try Alibre Design Xpress. It a free CAD version. http://www.alibre.com/xpress/ . To generate the g code, try Sheetcam. It's only $150. www.sheetcam.com.

I've run the motors for over an hour and they are only warm to the touch. My motors are rated at 5.4vdc, but I run them at 36vdc with a HobbyCNC board controlling them. I really don't know the rated...

I looked at your build log. This is a great way to document your progress to help others with their own projects. That is the purpose on why I setup my web site.

Your rapids are similar to mine. I...

The JGRO plans are detailed enough so that even a novice can build it. It is a good "first" machine that one can learn from. Check out my web site as I have many photos of the JGRO that I have built....