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Offline kolias

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Re: 1st MDF
« Reply #10 on: September 02, 2009, 11:13:34 PM »
A slice of foam insulation board is good instead of MDF for trial runs, it cuts cleanly and you can't snap a cutter in it even if you rapid through it with no spindle on ;)

Very smart, never thought about it
Nicolas
Nicolas

Offline kolias

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Re: 1st MDF
« Reply #11 on: September 02, 2009, 11:16:54 PM »
On the LC Extends menu if my maximum depth cut is 1/8" what should I put in the Min Z and maximum Z ?
Nicolas
Nicolas

Offline RICH

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Re: 1st MDF
« Reply #12 on: September 02, 2009, 11:18:28 PM »
kolias,
 Yes the manual says use a negative number. Z=0 would be the top of the work piece, a negative z will cut into the material and a positive z will be above the material. Of course this is useless if you have you z axis direction reversed.
See section 8.3.4 and also Tutorial #6 about plunge clearance.
RICH

Offline kolias

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Re: 1st MDF
« Reply #13 on: September 03, 2009, 12:55:32 AM »
Thank you RICH

Tutorial #6 did the trick
Nicolas
Nicolas

Offline kolias

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Re: 1st MDF
« Reply #14 on: September 07, 2009, 03:27:58 PM »
Have not been able to do my 1st cut on an MDF piece (see attached files). The router follows my design but when the program runs the router is raised to about 1” above the surface and then it decent to about 1/8” above the surface and stays there until the program ends.

On the setup / postings Options I have set: Plunge clearance = 0.1000 and line number increment = 5

On the layers menu I have set: Tool = 0.125” diameter, Plunge feed = 0.50”/min, Per pass = 0.1250”, Feed Rate = 15.00”/min, Total number = 0.

On the extends menu I have set:
Min X = 0”, Max X = 8”
Min Y = 0”, Max Y = 11”
Min Z = 0.1250”, Max Z = 1”

Can someone tell me where my mistake is?
Thank you
Nicolas
Nicolas

Offline budman68

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Re: 1st MDF
« Reply #15 on: September 07, 2009, 03:35:14 PM »
Kolias,

You have your cut depth at .125 which is "above" the surface of the material.

You'll need to set it to: -.125   as shown in the picture that I posted in reply #5  in this thread but I'll show it here again for you:



Dave
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Offline kolias

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Re: 1st MDF
« Reply #16 on: September 07, 2009, 04:55:26 PM »
I’m sure I did that, did you see the gcode?

N20 G0 Z1.0000 (rises 1” above surface)
N35 Z0.1000 goes (goes 1 thou below surface)

At least that is how I interpet this

How about the extends, have I set them correctly or they should be in reverse?

Thank you Dave
Nicolas
Nicolas

Offline ger21

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Re: 1st MDF
« Reply #17 on: September 07, 2009, 05:10:55 PM »
No,
N35 Z0.1000 is .1 above the surface

Did you set Z=0 to the top of the workpiece?
Gerry

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Offline budman68

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Re: 1st MDF
« Reply #18 on: September 07, 2009, 05:31:57 PM »
Hi Nicolas,

Quote
N35 Z0.1000 goes (goes 1 thou below surface)

.1000 is one hundred thousandths, not one thousandths.

I was looking at your LCam file before and I saw under "Cut Depth" that you have .125 units (it shows in blue text which means it's above the surface).

It should be "-.125 units" in black text which means it will be below the surface.

Now that I'm looking at your gcode, I do not understand you do not have .125 depth anywhere in your GCode. Did you click the "set layer" button in LCam when you input the depth?

Nicolas, where are you located, maybe I can call you and help you with this?

Dave
« Last Edit: September 07, 2009, 05:34:39 PM by budman68 »
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Offline kolias

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Re: 1st MDF
« Reply #19 on: September 07, 2009, 06:20:55 PM »
Gerry I guess I’m wrong….well what’s new lol

No I did not set Z=0, I don’t see any setting for that in LC but I do set the router bit to touch the work surface and then 0 the DROs. Where do you set the Z=0 in LC?

Ok Dave its 1 hundred thou and now I also learned that blue text is above the surface and black below, glad to know about it. Yes I always click on “set layer” button after I change my settings.

I have input my location in my profile but it doesn’t show when I make a post and I don’t know why either. Goes along with many other things I don’t know lol. I’m located in Montreal, Canada. Thank you Dave, but it is not that important to spend the money on a call. Soon or latter I will get it. Much appreciated
Nicolas

Nicolas