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Another thing to check is the size of the bit itself. Is it truly the size you think it is? They do wear down, and sometimes they do get manufactured funny. I would take a mic to the edges and see...

Sorry, just saw you already checked the backlash.

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Well, the only other thing i can think of, and I'm no newbie either, is the machine is loose somewhere. Mechanical slop. Those are the two places to look other than software which we'll assume is not...

Not to be flip but if it was calibrated it wouldn't be giving you this problem. I don't know what the 900mm rule is but i know measuring the distance and setting the steps per inch or whatever...

In mach3, you can calibrate the steps. There is a wizard that leads you through it, i think under motor tuning. Basically it will move the axis being tuned to a distance it thinks is right, then you...

Would I be able to "slice" the part using a bunch of "planes"? If I could trace the intersect between the "planes" and the object, couldn't I then use the cross sections to create a solid that i...

Thanks Jrmach,

Adding and subtracting in BA would be fine if I could figure out how to add and subtract :) As it stands I can't even select the shape to do those operations. If for instance I add...

A better example of what I am doing...

To be more clear though, my actual surface has irregular rails and is not parallel. Can extrude curve deal with that?

Yup, my complete lack of knowledge and understanding :) I'll look into that instead of doing it this way.

-C

Thanks for trying to help the slow guy in the room :)

My problem (well, this one anyway) is that once I make the surface, and add something like a cylinder through the middle to do a...

He folks,

I have an stl file which I used to emboss from component which worked quite well.

Now that I have that, I want to close it up and make it a solid so that I can add, subtract etc. I...

That's awesome, thank you!

Great googley moogley, that's beautiful! If you end making the files available I'd love to squirrel them away for a rainy day!

Chuck take a look at the joes hybrid. It uses v bearings to do what you want.

Are the holes different sizes? If they are then a tool change would be appropriate. If the bit is smaller than all the holes you might try a milling operation in stead of a drilling one. No expert...

I know that if I have a tool which is larger than a hole I need to drill in another CAM package the toolpath won't include those smaller holes. Could it be something along those lines?

Wizard, the picture is a potential cross section of two layers of MDF and the two sections of angle iron. I was thinking of easing the edges with an edge grinding jig/sled like I've seen the...

Thanks guys good points all around. I could either use 1x1 angle on top or weld gussets in to the inside of the 2 inch stuff. It's a temporary fix I hope so I don't know if I'll go through the...

I am planning on building a bigger router table now that I've cut my teeth so to speak but I am on a pretty tight budget.

I have a line on some 4x4 8020 to double as a gantry beam but with respect...

Just checked this and it is indeed set to "Machine Compensation in Z only"

Thanks for the tip.

-C

Victor,

Thanks for the info and ideas. I am clearly a newbie with regards to g-code and how things reference each other. I don't mind setting zero, it's easy enough but it's I am not sure how to...

I am working on a part for my next CNC machine (Joe's 2006 r2) and for the most part, posting code from bobcad/cam v26 seems to work fine. Simulations are spot on and all looks ok. However, when I...

Well I'll be a monkeys uncle... I had thought those settings indicated the tool moved for that axis and not the work. I reversed them all and BAM! Looking good, thanks Luke. Some times it just takes...

I've been working with my current machine for a few months just banging out simple gcode using qcad and then pycam to generate the code. So far so good. Now that I have a shiny new copy of BoBCad/Cam...

Sorry for the late follow up and thanks for the info. Posting a file for people to see/check would have been the "smrt" thing to do, sorry bout that. :)

Shortly after I posted the issue, I figured...

Brand new to BobCad/Cam and I am trying to use the CAM functionality to produce parts for the Joe's CNC v2.
The first part I am trying to figure out is the left side of the Z axis assembly. I've...

I finally got my JGRO put together and running after several years of staring at my controller board from HobbyCNC (4aupc rev2).

Specs:
JGRO standard build, nothing fancy
3/8 all thread drive...

With the adjustability of the rails in this thing is it really that critical?