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Roughing Holes Milled Repetitively


Moving Part within the stock

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@Sethian wrote:

Hi, I was wondering if there was a simple way to move the part within the stock. Some objects load on an angle which is pretty in efficient and wastes a lot of milling time. I'd like to make the stock a little longer and wider so the part will lie flat and then I could decrease stock thickness.I know you can center x and y in stock setup, but I am not sure how to do what I want?

Thanks!

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MeshCAM Toolpath Questions

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@JosephSeth wrote:

Without having to search through hundreds of threads, I'd like to ask a question...because I've only used MeshCAM once, and failed.

On the Toolpath Parameters option, is there anywhere online that has a line-for-line explanation of what everything means? Like, I'm not entirely sure what the Machining Margin is, or the Arc Fitting, etc. There are a few others...it's okay, you can all laugh and call me names.

Thank you for any and all help or direction where I can read.

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Repository/listing of TPS files?

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@WillAdams wrote:

Wasn't finding one, so went ahead and added a section on this to the wiki:

https://www.shapeoko.com/wiki/index.php/MeshCAM#TPS_files

Pretty sparse thus far, but it's a start --- probably we need to work up some sort of formal hierarchy and file naming convention. I'm going to try to get them added as a filetype to the allowed wiki uploads.

TPS files

  • [http://community.carbide3d.com/uploads/default/original/1X/50c80fdcefae2609365d23bdd466165c2d9feb6f.tpsbrass 063 3d.tps] [http://community.carbide3d.com/t/3d-rocket-hammer-head-in-brass/505]
  • [http://community.carbide3d.com/uploads/default/original/2X/a/a34bb201682ebedf6a72a6d0a1be8c6a2dddbb38.tps 125 063 hardwood 3D.tps] [http://community.carbide3d.com/t/forgot-settings/2700/2]

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Not Understanding Machine Region

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@sshwarts wrote:

I'm not understanding the Machine Region setting in MeshCam (note I'm trying V7 Beta). Previously, I added supports in MeshCam but this time I added it to my model -- I'm cutting out a spindle fan that one of the user's here was generous enough to share.

What's happening is that when the job is run, the support are cut through. Is this because I intersected the supports with machine region vs carrying them out to the edge? If I had made the region larger then it would of done the right thing?

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Meshcam: Setting Specific Toolpaths for Geometry?

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@cooper136 wrote:

So i machined a metal plate out of aluminum, I now need to go back and put a hole in that plate. I notice in meshcam that when i create toolpaths it just creates toolpaths for the entire object, what if i JUST wanted to ream a hole through the plate? Is there a way to do this in meshcam?

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Tutorial for use meshCAM

Need to Create Supports Where it Won't Let Me

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@csobod wrote:

So, I have a piece of stock bolted down in the Keepout Regions shown in the picture. The bolts need a clearance of 10mm so I have that set in my retract height. For the sake of rapid production, I cannot bolt the material in another place. Let’s just assume that.

How can I set supports inside this space? I want to create supports that go into the keepout region, since that area won’t be machined and I know that the piece can be anchored to it, I don’t see why I shouldn’t be able to. Problem is that MeshCam only allows me to construct supports for the outer region of the piece.

How do I get around this? And I’m hoping the solution isn’t to literally create them in Rhino (the modeling software I’m currently using) and then somehow create a keepout region around that. Because that would take too long on each individual piece.

Thanks.

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Why does the headsample tutorial cut around the outer perimeter of the stock?

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@chromate wrote:

I cannot for the life of me figure out why the headsample will cut around the out edge of the stock definition. It is my understanding that if you want to cut around the outer edge of the part area, you have to make the stock size bigger. I have been trying to figure this out for a while but then I gave up on it. Now I am trying to get the wizard to cut around the outer edge of a part I made myself and making the stock bigger than the outer edge of the part doesn’t seem to help! What did you do to the headsample file to make the wizard cut around the outer edge of the stock definition.

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Meshcam 7 stalls "reordering toolpath"

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@cmice wrote:

Hey all - I’m having a problem generating toolpaths in MC 7 (build 5, mac os x) - I’m on a 2.7ghz machine with 16gb memory, so I don’t think that’s the problem.

I’m trying to cut a logo (about 3" dia) with some amount of detail on it, but nothing crazy. I import a bitmap into MC, and let the art functions do their thing to create geometry. But when I go to generate a toolpath (using auto wizard or manual), MC goes through all of the digesting and then the last step is “reordering toolpath” where I’ve left it sit for an hour and it never finishes doing it.

I’ve come up with some kabuki dance where I export 3d/STL from MC, pull it into meshlab where it “unifies matricies”, save it back out, re-open it with MC - then sometimes if I switch either waterline or pencil finish on/off that also helps. Major PITA tho.

But I’m at a loss for how to get past this step, and I’ve not gotten a response from either Rob, nor has the moderator approved my question for grz forums - so I’m posting here.

Chris (Nomad)

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Can't skip the Roughing Pass

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@CupertinoJones wrote:

I have Meshcam 7 (build 5) for Mac and I’ve made a first attempt at a job. I’m not convinced the finish pass worked. But the roughing is fine. Now if I try to do a finish pass and DISABLE the roughing pass in Toolpath Parameters, it doesn’t generate a pass at all (The finish types are all listed as 0 Minutes). If you run this on the CNC, it just prompts for the tool changes and spins up but there is no path.

This is basically the same as Only Rough Cut, No Finish Pass but I didn’t want to revive it.

So… before I fall too deep down this rabbit hole, this should be able to skip the roughing pass, right? To me, it just looks like it ONLY does the roughing pass.

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First milling and issue

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@amclaren wrote:

Hi All,
I’m new to milling and new to meshcam though not new to cad and cam (rhino user with 2 printing machines).

I milled a fairly simple item and have run across a problem
The border around the outside should be 1.5mm uniform. On the sides its .75 and on the top its over (its 1.75mm). I will try to attach a photo of the item and also the settings too.

If any one can help with suggestions that would be great.

thanks
Andrew

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Beginner in Meshcam

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@norasaad wrote:

Hi,

I have some questions,

1. I want to add V Bits to MeshCam tools but couldn’t figure out how :frowning:
These are my bits: https://www.amazon.com/HUHAO-Straight-Engraving-Carving-Machine/dp/B074Q7RKD9
It’s just shows the Ball and Endmill

2. How can I flatten a wrong designed seal, like this picture. in Meshcam.
**

**

.
Thank you for your help :slight_smile:

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Meshcam ART as 'poor mans' answer to Aspire bitmap import?

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@Ton80 wrote:

Hi.

I use VCarve Pro and the one feature that I miss from my days of using the Carvewright software was the ability of that package to import a grayscale bitmap and turn it into a relief carving. Sadly, VCP doesn’t support such a feature but for another $1400 Aspire does ( plus a WHOLE LOT MORE ). I don’t and can’t spend that money at this time.

Does anyone use MESHCAM ART to create a component that can be imported into a VCarve Pro project? Thoughts on the process and does it provide you with a solution that just works at around 1/3rd the price of Aspire?

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MeshCAM V7 Pop-up Windows Blank (MAC)

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@VikingCO wrote:

Background: I was having the same issue with OS Sierra as many experienced back in '16, in that the program crashes when starting the finishing g code calculations. It seems like there isn’t a fix for it. So, I decided to jump into the V7 Beta.

Issue: The new V7 opens pop-up windows when using tools like ‘Define Stock’ or ‘Create Toolpath’, but when I select these the pop-up is just a blank window. Any fixes?

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MeshCAM 3-flute endmill feeds and speeds

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@plundh wrote:

Hi all-

I have a Nomad 883 ‘Classic’. I’ve bought some 3-flute endmills from local UK supplier for milling a CPU heatsink in 6061 aluminium.

How do I edit tool settings (feeds and speeds) in MeshCAM to account for the extra flute?

Btw, has anyone made an aluminium heatsink with the Nomad?

Many thanks!

-Peter

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V7 Can't Do DXF Regions?

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@csobod wrote:

So, I need to import DXF, STL, or really anything for my machine region (otherwise I will have to use the polygon tool and spend literally hours trying to draw it by hand). It seems like this is no longer possible in V7, which is what I downloaded when I bought my Nomad, and did not necessitate a product key to use. Now I’m trying to downgrade to V6 so I can import drawings to define my machine regions and it’s asking for an activation code. I don’t recall receiving an activation code with my Nomad.

Any ideas? Thanks.

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Unexpected Toolpaths

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@mcdavidr wrote:

Cut my first part on Nomad using MeshCam.Flywheel
Used these settings:


Part cut well but toward the end it made some unexpected moves. When I thought it was done it started doing a “adaptive toolpath” a circular pattern. Then it went across part in the x axis dropping down into the cutouts and machining across the recessed area in the center? this left a nasty scalloped pattern in the lip of the recess. The it made a full depth light pass out the outside and in the pockets. At this point the cutter had started to load up with chips and the adhesive of the double stick tape. Luckily it didn’t break the bit. What parts of my selections are causing these behaviors?

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MeshCAM thinks my .25" stock is 1.1250" and it beats me…

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@CupertinoJones wrote:

I have a Fusion 360-sourced .25" (Z) design to cut out of some .25" Corian. The stock is the exact same size as my design and I’m just trying to cut the inside of the design out of the stock.

I can’t set Zeros right because although the stock is set to 8"x6"x.25", the zero setting display shows dimensions that are just baffling. Top of stock should be .25" and it’s showing as 1.1250". I bet I’m overlooking something or it’s a bug (software or my model).

See photos (model in F360, MeshCAM stock settings, set Zero display)

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Fast moves create grooves in part only when program zero is above stock height

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@DUEMFC wrote:

So the part I want to machine is 94mm in height. The geometry zero is at the bottom of one corner, and I want to set the program zero at a set height 100mm above it (the geometry zero) as that will make it easier to set the tool to the zero to start with. The problem is that when the program zero is set to above the height of the stock (e.g. 100mm), any and all rapid moves in the program result in deep grooves in the top of the part in the simulated output (as if the tool is not going up far enough to do the rapid moves). This happens independent of what the retract height is set to, and the grooves in the top get deeper when the height of the program zero above the stock is increased. It does not happen when the program zero is set to the bottom of the stock (the same as the geometry zero in this case). It seems to be a unique thing to do with having the program zero above the stock, but I cannot think why this would be the case, it seems the opposite to what I would expect.

Image: the simulated output from this effect, with an extra-large retract height so the actual height of the paths (the red ones across the part) do not seem like they should cause those grooves

Does anyone know why this is happening? Or whether this is likely to actually do what the simulation says it will do in the machining?

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