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Messages - Tweakie.CNC

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5281
General Mach Discussion / Re: Lazy cam
« on: September 13, 2011, 05:00:22 AM »
Hi Graham,

Welcome to the forum.

The sequence; open Mach, click File, click LazyCam should work OK - it opens OK for me using Mach R3.042.022.

Tweakie.

5282
General Mach Discussion / Re: Help with circles
« on: September 13, 2011, 04:50:20 AM »
Hi Isaac,

I am just pleased you have found a problem and at least have a way forward.

Tweakie.

5283
Post Processors / Re: Post for Signlab V5.
« on: September 13, 2011, 03:27:56 AM »
Hi Russ,

What are you requiring Mach to do from SignLab ??

If it is just cutting vinyl then the Roland or Graphtec HPGL can be converted using LazyCam.
I usually convert HPGL using 'Target2GCode' which can be downloaded free from the Majosoft website  http://majosoft.com/

Tweakie.

5284
General Mach Discussion / Re: Help with circles
« on: September 13, 2011, 03:01:51 AM »
Hi Isaac,

As I am sure you already know - If the tool loading or feed rate causes any compression of your 'anti backlash nut spring' then 'backlash' will be present and could most likely cause the problem you are describing.

Something to perhaps try is to decrease the tool loading by reducing the feed rate and / or depth of cut and then use 'multi pass'.

Tweakie.

5285
General Mach Discussion / Re: Help with circles
« on: September 12, 2011, 12:28:17 PM »
Sorry Isaac my bad  :(

D.T.I is "Dial Test Indicator".

Tweakie.

5286
General Mach Discussion / Re: Help with circles
« on: September 12, 2011, 08:11:02 AM »
Isaac,

You probably need to check all the Kerk data sheets etc. for setting and adjustment of their screws / nuts.  http://www.haydonkerk.com/Portals/0/files/lead_screw_technology_engineering_data.pdf

Also check your machine for rigidity / tightness of all components and also for any lateral movement at the tool tip when stationary (and disconnected from the supply  ;) )

The problem with backlash is that the total amount is very dependant on tool loading. You can set up a machine for zero backlash with a D.T.I but as soon as it is put into operation, the deeper the cut or greater the tool loading then the greater the backlash that starts to appear. Another important factor here is having good quality and sharp tooling (dull cutters are best consigned to the bin, unless they can be resharpened cheaply enough).

Tweakie.

5287
General Mach Discussion / Re: Help with circles
« on: September 12, 2011, 06:31:20 AM »
Isaac,

That effect can be caused by backlash on your X axis. Have you checked the axis for any slack or lost movement ??

Tweakie.

5288
*****VIDEOS***** / Re: scripting
« on: September 12, 2011, 02:08:47 AM »
Excellent Dave.

Well - would you do it again ??

Tweakie.

5289
Show"N"Tell ( Your Machines) / Re: New Project for the shop.
« on: September 11, 2011, 02:10:00 AM »
Nice additions Dave.

You just need another light over the posters.  ;D

Tweakie.

5290
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: September 08, 2011, 05:52:11 AM »
I must admit that I hadn’t really thought about it but yes I suppose it is a UK thing.  :)
The clue is in the shape – Its Ham (or called bacon when it’s fried).

There is enough serious stuff going on in life so I find that doing something completely daft, perhaps to bring a smile, every now and again makes a break.  ;D

Tweakie.

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