Messages

1

General Mach Discussion / Re: Problem engraving - depth changes

« on: May 03, 2013, 01:38:45 AM »

Thanks, not rubbish at all!
I did find what I think is a solution.
Within Mach3 I adjusted the acceleration for the z axis to 2.
Still needs further testing, but so far the results are good.
I'll post more results later.
thanks for all the help!

2

General Mach Discussion / Re: Problem engraving - depth changes

« on: April 26, 2013, 12:35:26 PM »

Hi Dave,
I've been using the profile toolpath, and I set it to a depth of .02"
I've been doing it this way for about 8 months with great results.

This is a recent problem, I should say with recently created toolpaths for engraving.
I have created profile toolpaths for profiling and there are just fine, which is curious.
I've attached pictures of a bird and some lettering created in VCarve.
Bird-see the difference between the top and bottom beak.
Lucas-maybe be hard to see, but it gets progressively deeper.

I think I may run some older toolpaths to see if the problem shows up again.
I may even run this bird path again to see if it does it again.

pics are here temporarily.
https://www.manzanitakids.com/contactus.sc

3

General Mach Discussion / Problem engraving - depth changes

« on: April 25, 2013, 11:29:18 PM »

I had a problem today when tracing some line work with a vbit.

A little background, I imported some .dwf line work I created in AutoCad. Brought into VCarve and created a single toolpath for all my linework(I was creating animal shapes on a wood board). The depth would change randomly from line to line, some lines are at the proper depth and others were at about half the depth.

This also happened randomly when I did some lettering in a different toolptah. I created a word in VCarve, created a single toolpath and the word would start shallow and progressively get deeper. Really strange.

I'm using Mach3 and a Romaxx CNC.

I'm thinking about reinstalling Mach3 tomorrow, unless someone has some thoughts. I have a ton of work this weekend and need to solve this.
thanks!

4

General Mach Discussion / Re: Bad cuts

« on: April 08, 2012, 06:23:09 PM »

I slowed down the velocity in Mach3 to 60ipm and in VCarve I adjusted the step-over to .05 from 1.0

The chatter is better but not perfect, and I can still see tool markings between the .1" depth of the passes. Either way I should be able to cut a .1" depth  with a 1/4" bit at around 100ipm and still get good results.
These adjustments helped a bit, but did not solve the problem.

The Router looks good and all the bolts are tight, so not sure that's the problem.
What other adjustments should I look into?

5

General Mach Discussion / Re: Bad cuts

« on: April 08, 2012, 10:41:51 AM »

Tweakie,
that exactly what I was thinking. Will check all screws first and check run-out on the router.
I'll be ditching the colt for a Porter Cable 892 in the next week or two anyway.

6

General Mach Discussion / Re: Bad cuts

« on: April 08, 2012, 10:23:51 AM »

I'll adjust the step-over, currently set at .1, thanks.

I'll try cutting at a shallower depth as well. sorry mis-typed, I'm using a 1/4" bit in 3/4" maple-will edit post.

7

General Mach Discussion / Bad cuts

« on: April 07, 2012, 11:29:51 PM »

I just got a Romaxx and have had no success getting a good face on my cuts.

I'm using Vcarve and Mach3, a bosch colt and onsrud bits.
I'm getting chatter marks and can also clearly see each depth of cut.
I've adjusted the velocity in Mach 3 from 160 down to 60 and that helped a little. I've tried running the router from 15k-36k rpm and the result are the same.

I'm a newbie and a bit confused at what to adjust first as there are so many options.
I'm cutting profiles and pockets in 3/8" Baltic Birch ply with 1/4" compression bits and 3/4" maple with a 3/4" bit. I'm using bits that Onsrud recommended.

Help is greatly appreciated!

8

General Mach Discussion / Re: radius different one corner of square?

« on: March 27, 2012, 11:10:00 PM »

Thanks a lot Gerry, will give this a try.

9

General Mach Discussion / Re: radius different one corner of square?

« on: March 27, 2012, 09:01:41 PM »

Not sure what CV mode is.
I just adjusted my drawing with no fillets, just hard corners and it did the same thing.
I'm using the pin settings that Romaxx recommended, not very confident to start messing with them yet.

Does this change your answer any?
thanks

10

General Mach Discussion / Re: radius different one corner of square?

« on: March 27, 2012, 08:24:58 PM »

Correction,
It turns out the problem is not with the entry point, but with the other 3 corners of the square.
The radius on those seems to be twice as big as desired.
Not sure how to fix this, help appreciated.