Okay, I found this website last week and decided it was time to build a CNC router. So I swiped three HP Laserjet III from the trash, modified the JGRO plan a bit for my needs, and began building today. Here's what a couple of hours of work produced.

amurphysmu,

Looking very nice,

Trash bins are our friends :D

amurphysmu,

Good start, keep the pictures coming. I will post some pictures and a video of my completed jgro machine soon.

Great job...! Imagine what you could do with the lights on!! ;)

Its looking good.

Got the other 8 support blocks cut and drilled. Have them in the freezer over night to get them nice a crunchy for threading tomorrow. Was able to attach the uprights and set some pipe in to test the fit. It looks like the assembly is about 40 thousandths out of square, not to bad. My test gantry slides like quite nice.

What source did you get those lead-screw bearings from? Were they inexpensive?

You're project is coming along! keep up the good work.

Got them from Tanner Electronics in Dallas for $0.99 each. They're made of Delrin with a 5/16" bore.

Os you machine wider than the original jgro, if so you may want to have you pipe rails a larger dia. thats what i had to do, and it works well with no real noticable flex which machineing.

here is a link to mine and also 3d e-drawings to download and check out.

http://www.cnczone.com/forums/showthread.php?t=10067

Joe

Os you machine wider than the original jgro, if so you may want to have you pipe rails a larger dia. thats what i had to do, and it works well with no real noticable flex which machineing.

here is a link to mine and also 3d e-drawings to download and check out.

http://www.cnczone.com/forums/showthread.php?t=10067

Joe


How wide and how big of pipe did you use?

How wide and how big of pipe did you use?

z = 1/2"x18"
y = 3/4" x 36"
x = 1" x 60"

and the adjustment blocks, all holes and spacing between redone accordingly, thats why i drew it all up in cadd.

Joe

...I swiped three HP Laserjet III from the trash..
So what controller did you end up using to drive your HP steppers? Thanks.

Rance

So what controller did you end up using to drive your HP steppers? Thanks.

Rance

Hobbycnc controllor, even has the correct wire color coordination in the instructions.

Joe