Please school me in MakerCAM tabs before I waste...

an open source, web based CAM package that works!
bharbour
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Please school me in MakerCAM tabs before I waste...

Post by bharbour » Sat Jan 10, 2015 9:59 pm

...another board. Even though the tab units say it's in inches it's really in mm/cm?? I'm using a .25" cutter and I want to leave enough material, in pine. that the interior part of the profile doesn't seperate and jam the machine. I've wasted two pieces of board with that happening.

So...with that in mind...what should be my tab settings for width and thickness?? Your help is much appreciated...the frustration is growing.

Tnx,
No longer have a Shapeoko, but use a machine of my own design...
https://www.youtube.com/watch?v=gFY4gC9TqD0
http://deltaguitarworks.tumblr.com

bengtec
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Re: Please school me in MakerCAM tabs before I waste...

Post by bengtec » Sat Jan 10, 2015 10:06 pm

I don't know when or where I saw it (I have a feeling on Winston Moy's youtube channel) but I think the tabs don't take into account your cutter size.

Edit: yeah, it was Winston Moy, http://youtu.be/9L5YXKboMRc?t=1m37s, and he does say that makercam doesn't take into the cutter size for tabs
Ben
Stock SO2 #7722, Dremel 3000, Arduino Uno, G-shield, GRBL 0.9g
Rhino>CamBam>Raspberry Pi with GRBLWeb

bharbour
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Re: Please school me in MakerCAM tabs before I waste...

Post by bharbour » Sat Jan 10, 2015 10:17 pm

I saw that too but didn't understand it. It's not yet straight forward for me.

bengtec wrote:I don't know when or where I saw it (I have a feeling on Winston Moy's youtube channel) but I think the tabs don't take into account your cutter size.

Edit: yeah, it was Winston Moy, http://youtu.be/9L5YXKboMRc?t=1m37s, and he does say that makercam doesn't take into the cutter size for tabs
No longer have a Shapeoko, but use a machine of my own design...
https://www.youtube.com/watch?v=gFY4gC9TqD0
http://deltaguitarworks.tumblr.com

bharbour
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Re: Please school me in MakerCAM tabs before I waste...

Post by bharbour » Sat Jan 10, 2015 10:31 pm

Let me ask this way...with a 1/4" bit if I make the tab width 1/2" and thickness 1/4", that would theoretically leave a tab 1/4"X1/4"...correct??
No longer have a Shapeoko, but use a machine of my own design...
https://www.youtube.com/watch?v=gFY4gC9TqD0
http://deltaguitarworks.tumblr.com

bengtec
Posts: 46
Joined: Mon Dec 29, 2014 2:09 pm
Location: Wiltshire, UK

Re: Please school me in MakerCAM tabs before I waste...

Post by bengtec » Sat Jan 10, 2015 10:56 pm

if what he says in the video is true, yes. I'm guessing that isn't what you are seeing

I've only just started out and haven't really got on that well with makercam. I use rhino all day at work for cad so I am naturally going use it for my cnc cad and it doesn't natively support svg so makercam isn't going to be part of my workflow going forward and as such haven't put much time into working out how it works.

hopefully someone more familiar with it will chip in and be able to help. Just thought I would offer the information I had come across
Ben
Stock SO2 #7722, Dremel 3000, Arduino Uno, G-shield, GRBL 0.9g
Rhino>CamBam>Raspberry Pi with GRBLWeb

chomdh
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Location: Bettendorf, IA

Re: Please school me in MakerCAM tabs before I waste...

Post by chomdh » Sun Jan 11, 2015 3:05 am

Correct, makercam does not account for cutter diameter in the tab width.
So I was using a 1/8" cutter tonight to make some hold-downs and did design in some tabs. I entered 0.25 inch tab width and 0.125 inch tab height. Resulting tabs were 0.125" wide x 0.125" tall.
Shapeoko2 #3702:
DW611, arduino uno, gshield v5, NEMA23's on X & dual Y, NEMA17 on Z with ACME rod, 9mm belts, Mean Well NES-350-24V power supply, re-inforced gantry rails.
Soon to have inventables spindle mount and 1M X axis.

Dhpenner1
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Re: Please school me in MakerCAM tabs before I waste...

Post by Dhpenner1 » Sun Jan 11, 2015 3:48 am

This is off top in a way, but you should check out JSCut. I made the switch from makercam and haven't looked back.

bharbour
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Re: Please school me in MakerCAM tabs before I waste...

Post by bharbour » Sun Jan 11, 2015 2:49 pm

i will check out JSCut. BTW...I set .5 inch wide tab and .25 inch high tab and that resulted in a .25 X .25 inch tab. I'll post pics in a few minutes.
No longer have a Shapeoko, but use a machine of my own design...
https://www.youtube.com/watch?v=gFY4gC9TqD0
http://deltaguitarworks.tumblr.com

bharbour
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Re: Please school me in MakerCAM tabs before I waste...

Post by bharbour » Sun Jan 11, 2015 3:08 pm

Pics...

Top...

Image

Bottom...

Image

This is a template I'm going to use to precisely cut out the pocket for a guitar neck. I will use inserts the same shape in the cut outs for the pickups. Then those inserts will fit in existing pickup routes on the body which will then correctly position and line up the template for cutting out the neck pocket on the body.

In the future I will likely just put the body blank in the Shapeoko and cut out the pockets for the neck, and pickups. Then I will align a seperate body outline template to those pockets and cut out the body shape. It's much more critical to have the neck and pickup pockets, and thru holes for strings all aligned together.
No longer have a Shapeoko, but use a machine of my own design...
https://www.youtube.com/watch?v=gFY4gC9TqD0
http://deltaguitarworks.tumblr.com

bharbour
Posts: 413
Joined: Wed Aug 06, 2014 3:40 pm
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Re: Please school me in MakerCAM tabs before I waste...

Post by bharbour » Sun Jan 11, 2015 5:03 pm

More pics of the completed template...

Template with inserts...inserts (really an inlay that doesn't sit flush) will fit into existing pickup routes on the body.
Image

Image

Like so...

Image

Nearly perfect with a neck pocket on an existing Tele body.

Image

The inlay and pockets the SO2 cut didn't fit perfectly with each other and I've got to figure out why. They were maybe a 64th off or a little more. That could be because of Inkscapes line width thingy. I'm still not sure what I'm doing there.

I can't take credit for the idea to make this template. I saw it on TDPRI.com but I don't remember who made it.

Tnx,
No longer have a Shapeoko, but use a machine of my own design...
https://www.youtube.com/watch?v=gFY4gC9TqD0
http://deltaguitarworks.tumblr.com

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