Hi, when doing 3D offset pocketing, and also other 3D finishing cuts where the surface has an adjacent vertical face at its edge, the cutter always leaves some material at the edge (on the vertical...
Type: Posts; User: AvB
Hi, when doing 3D offset pocketing, and also other 3D finishing cuts where the surface has an adjacent vertical face at its edge, the cutter always leaves some material at the edge (on the vertical...
OK that helps a lot, thanks Gerry. I did get more success this afternoon increasing the feedrate and reducing spindle RPM. In future I'll stick with 6mm or bigger, and keep the plunge depth a bit...
Hi, I have a good quality solid CNC router mill. When I try to cut thick ply or cabinet board etc using a 2 flute endmill, the cutter gets terribly hot. For example at the moment, cutting pieces from...
Hey Gerry, thanks. I have been busy but got time to have a look at it again this afternoon. I disconnected the Z gecko drive, and the X and Y drives fired up normally so I thought yay, it’s all due...
Can anyone help?
Hi - I am a relative newbie to CNC. I have a good solid quality mill that I bought about 5 yrs ago to make model aircraft moulds. It has a UCCNC ETH-300 motion controller, CNC4PC C23 breakout board,...
In Madcam, there's a tool parameter called "Cut link distance" which is very useful. When doing a big parallel finishing job with thousands of passes like the curved 3D surface in a wing mould, you...
Hi, I'm a hobby guy with a good CNC 3-axis mill that I can use to make model aircraft moulds, but I don't understand the complexities of CNC.
I have been using Rhino and Madcam with pretty good...
I got this reply back from Joakim at Madcam support (sorry it will be a bit clunky without the pictures):
This is a bug when using flat cutters. It has to do with the clipping planes. It will be a...
Yes as mentioned below I tried adding height to the madcam box but it didn't help.
Hi,
I can't understand why the planar finishing toolpaths keep missing a bit, the highest part of this slightly convex wing shape. I haven't had this problem before.
If I set the angle limit on...
Hi Seppo, I bought my own machine 3 years ago and have cut quite a few moulds now:
https://www.rcgroups.com/forums/showthread.php?1968257-AvB-getting-a-CNC
Hmm, well I've just had the first problem. I mirrored some of the first toolpaths with no problems. But I mirrored some finishing Z and planar cuts for the fuselage cavity which use an 8mm ballnose...
Thanks. Yes, I should buy the drills. However my CNC adventures are infrequent and the holes are just a final step, so although it's mildly annoying it's not a big deal to fiddle around with test...
Dan I think the default cut link distance is zero (the parameter box is empty), which forces all moves to retract? Is that right?
Gregore, I'm no whiz, so perhaps others would have better suggestions. But what I do is:
Create a layer called eg "Fake lifted surface".
Select the surface or surfaces you're cutting, and copy...
Just reviving this thread ... I started out as a CNC novice 3 yrs ago (still am) and elected to go Rhino/ Madcam/ Mach3. I certainly have had lots of difficulty getting a grasp of the concepts of...
Thanks gentlemen, I hear what you're saying - good advice and much appreciated. However I feel that something is going on ... the cutters measure up at 8.00 with the Verniers - the one I used...
When I do the alignment dowel holes around the flanges of the model aircraft moulds, they vary in size depending on what the guy uses for his alignment dowels, e.g. some are for 1/4" tubing, some for...
Timely reply Sven. Just right now I've taken the finished drawing of the left side mould, selected everything (drawing and all Madcam toolpaths) and mirrored them. I went through the toolpaths...
Thanks very much Dan, I'll check.
Hey Dan, if I did try mirroring everything, is it apparent if the clipping planes invert themselves? Or is the problem hidden somehow? I would like to try it and see if it works - but I'd need to...
Great advice thanks Dan. I'm really surprised that mirroring could invert the clipping planes! Seems strange when everything else in the drawing would mirror only around the Y, but I don't understand...
Hi,
I am a fairly basic amateur, having played intermittently with Rhino, Madcam and a fairly good solid accurate 3-axis router table for 3 years now. I have had pretty good success making model...
Ah, that's a great tip, thanks!
Thanks very much Sven. OK, I understand what you're saying. I almost exclusively cut the moulds in Corian (or similar solid benchtop) acrylic and it is very tolerant of feeds and speeds. I was...
Thanks. OK, so I guess you can still postprocess them together if they are the same cutter size, and just ignore the M6's?
I've been using Rhino and Madcam for about 18 months now and have great results generally, but of course there are always new things to work out.
I am a bit confused about how the cutter settings...
Good tip, thanks.
That's a great help, thanks. I haven't managed to find long flute lengths there but did find THESE with reduced shank. Probably not their intended use, and an expensive item. I will email them to ask...