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Messages - BluePinnacle

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Tangent Corner / Re: how to login my cash app account
« on: November 21, 2018, 05:48:48 AM »
Greetings in jesus Name!

Gotta love the lads from Lagos. They never fail to disappoint.

General Mach Discussion / Re: Trouble with parametrics & subroutines
« on: November 15, 2018, 07:46:46 AM »
G01 x#1 y#2 ... it's hardly complicated as offset tool moves go and it makes no difference if it's one sub deep or two. The only thing that breaks it is being in a subroutine at all. outside the sub, it works fine. i just have to repeat myself a lot :D

General Mach Discussion / Re: Trouble with parametrics & subroutines
« on: November 14, 2018, 11:10:17 AM »
^ that's my part alright. My mill's set up on Mach3 although I may well fit Mach4 when I build the new controller.
I tried calling a tool from the tool table in Mach3 but it makes no difference.

General Mach Discussion / Re: Trouble with parametrics & subroutines
« on: November 09, 2018, 08:21:24 AM »
well... Looking at the fossil record of the forum and having tried damn near everything including nesting, un-nesting, changing parameter names and drinking coffee until my eyes ache, it seems that diametric offsets are broken when used in subroutines.

so I've un-nested the subroutine and copied and pasted its contents as many times as needed. feh. Not nice coding but it works. Maybe I should buy Mach4. Is the issue solved in the new version?

General Mach Discussion / Trouble with parametrics & subroutines
« on: November 07, 2018, 01:09:52 PM »
So, here's some code I've been writing to try to get an exponential curve on a job. It's just a toolpath for now, no feed rates, spindle commands or anything fancy, I tend to do those later in the game.

g0 Z5

G0 x-65 y0
(g41 p7) (this is what buggers it up)
g0 z#3
G01 X-55 y0
G01 X-45 Y0
G01 Z#3
g01 x0
M98 P2 L10
g01 X 0.86 Y-35.71
G03 X0 Y-35.5 I-0.89 J-43
G01 X-45
G01 X-45 Y0

O2 (Incriments X then recalculates Y, then moves there)
G01 X#1 Y#2

Note the G41 offset is commented out - like this it should display a nice sort of boomerang shape, but of course there's no tool diameter offset. With the offset active, it runs O2 once then bails out and shortcuts back to the start of the g03 arc.
The really strange thing is, the blue toolpath line is the right shape - it just doesn't follow it with the offset on. it's as if it will only run O2 once when the offset is active.
Help me out lads, I'm losing my mind here.  :-[

General Mach Discussion / Re: Question before my next Mach3 question.
« on: October 15, 2018, 10:02:04 AM »
^ agreed, for basic work on or off is enough. If you have a VFD with a knob for controlling output just put a reminder line in the code with a M1 after spindle start:

M3 M8
%Set spindle speed to 10,000 RPM%

G0 x etc

Then it will stop and wait for you do do this and you can sort it out and send it on by pressing Cycle Start.

My mill's got an expanding sheave pulley drive but it's hand cranked into position with the motor running. I'm still trying to think of a way to control a motor drive to wind it up or down as part of an M6 call.

If the problem is with the limit switches then an override button should fix it. Switches of any sort will have a bit of hysteresis built in to prevent bouncing and you might need to move your axis a surprisingly long way to get them to reengage.
Mount it on a vertical surface so you can't put something on top of it and leave it in ;)

Let us know if this doesn't do the job.

Worth noting that if you're cutting grotty metal like odd castings and steel with mill scale on it, conventional milling saves the edges of the bit to an extent. if the cut starts in the meaty bit of the metal it doesn't impact on the scale or the casting's crusty shell. Climb milling has the teeth of the bit cutting through the nasty bits every time and it fouls it up quite fast.

@joe Chinese steel has this sometimes including structural sections, big pockets of carbon or slag, horrible stuff.

^ very interesting about the coating valency and its relevance to materials cutting. I'll bear that in mind.
I've had some pretty good carbide tools from AliExpress, the Chinese suppliers seem good at making these. Their HSS tools are a bit 3rd world but their carbide ones are well worth it and certainly a lot less intimidating cost-wise for a new guy.

General Mach Discussion / Re: Time for a rip-out
« on: July 19, 2018, 05:23:22 AM »
So, I have the UC300ETH on my desk waiting for a build ... Looking through my box of industrial lego I have a lot of the parts I need to do it, so watch this space  ;D

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