Wednesday, 14 February 2018

Lets get down to earth - episode 206

This video is inspired by Jestah Carnie
Thank you for the question. It raises some interesting points which I try and address in this video.
 If you would like the short answer "I honestly don't know", but if watch this video you will see my reasoning for connecting my machine up the way I did.  don't know if I am right or wrong but things are working ok for me and until that changes I have no reason to change things.


 Click to view


The real problem
The Internet is a wonderful thing but sometimes it seems that half of the Internets purpose is to contradict the other half. For some reason in this day and age some people still think that the earth is flat and that the Global warming is a hoax. We are of course entitled to our own opinion and this video is simply me giving you mine. Tomorrow another video will appear telling me why I am wrong and that is fine. 
I haven't been able to find anything much in the way of real information on this subject so I have tested to see what works for me. The other issue is that everyone's machine is different. This is the Apple  / Windows PC argument. Standardisation over Variety. The penalty for variety is that it becomes harder to nail down the best way to do something so providing general advise is the best you can do. My Gecko drive with isolated inputs will behave differently than a cheap Chinese break out board with no isolation. Both can do the same job but one will be less susceptible to noise than the other so one will be more reliable than the other.

What's your opinion?
I'm always interested to hear what others have to say and this is no exception.
Let me know your thoughts.
Am I right?
Am I wrong?
How is your one setup?
Was I doomed before I began?

Thanks for taking the time to watch and I will catch you next time.

Cheers
Peter

Sunday, 11 February 2018

Installing a Touch off Plate in Mach3 & UCCNC - episode 204 & 205

This week we have a double feature. How it install a touch off plate in Mach3 and UCCNC.
These have been put into different videos which will make following the install process easier.
A big Thank you to John Revill who has updated his UCCNC macro and shared it with us so that we can all use this process. I have updated the Mach3 script so that the experience is now the same in both controller software's which will make interchange between these 2 software's easier for people like me who use both.
Simply select the video that matches your control software and away you go. If you are curious why not watch both.



Click to watch Video

 



Click to watch video


Setting the touch off plate thickness
 The most critical part of using these scripts and macros is entering the correct plate thickness.
I started by measuring mine with digital callipers and entering this figure into the script / macro. If you find the cutter is sitting above or digging into the material in the thickness test then there are a couple of possibilities. 
Your Z axis might not be properly calibrated or the digital callipers might be slightly off.
If you are sure it is the callipers that are at fault here is a simple way of finding the correct value. If there is a gap between the cutter and the material surface then the value you entered into the Script / Macro is too small. If the cutter buries itself in the material then the value is too large and needs to be reduced. Make changes small and retry. 

Testing the offset value
When you test the script / Macro by entering an offset value of your material thickness no not be alarned or surprised if the cutter sits above or buries itself in the material. The cutter is set to be the value you entered above the spoilboard when you tell the Z axis to go to 0 and your material is probably under or oversized. If the discrepancy is larger than you expect then you will need to investigate further what the cause is. A simple check of the materials actual thickness will probably answer the question as it might be far thicker or thinner than you thought. If you find that you have a problem with both setting the touch off plate thickness and the offset value test seems to be way off then take a look at the Z axis calibration. If might be off.


Macros and Scripts

Please read this first.
The date included in the script will allow you to check if you have the most up to date version. There may have been changes to the script for bug fixes or feature improvement so please check.

If you find an issue with a script or Macro please advise me ASAP so that a fix can be found and implemented. Use the contact form on this page.


Mach3 Scripts
There are 4 scripts available in the Archive section under single and 2 pass scripts
The latest version is in the 2 pass with Touch test directory and is the recomended version.
After entering the material offset value the plate needs to be touched to the cutter to begin the probing routine. There is a 2 second delay to replace the touch plate ontothe table top.
The touch test makes sure the circuit is working correctly before probing begins to eliminate the risk of craching the cutter into the plate due to  a fault or if you forget to put the ground clip on the cutter if you use one.
 
All files are based on Big Tex's Auto zero setting script  Select the script you want to use and you will need to change the Plate Thickness value to match your tool setter plate but other than the remaining values should be OK.

Updated 27/07/18 Minor changes To Error Handling and some Grammer correction
A readme file added to give additional setup information.
Updated 30/08/2018 to add a Feedrate override resest function for safety and restore to previous setting after probe complete. This is to ensure the feedrate is correct during probing.


http://bit.ly/2nGYeFJ 


UCCNC Macros
Macro courtesy of John Revill
Select either metric or Imperial and rename to M31.txt
Replace the Aluminium touch off plate thickness value to match your own plate.
Replace the M31.txt in your UCCNC profile with the new one. 


Updated 09/02/18 to remove the need to enter 0 in question box. You can now just press the enter button if you are not using an offset. eg you have the tool setter on top of the material.
Updatesd 26/08/18 to add Pretouch test and Beep. 
A readme file added to give additional setup information.


http://bit.ly/2EbS3DZ


Thank you for watching  and I hope you find this useful.
Feel free to leave a comment or any suggestions you may have.

Cheers
Peter

Sunday, 4 February 2018

The Nominal Tools Setting Thickness Guide Take 2 - Episode 203


After designing, making and demonstrating the Nominal thickness Tool Setter last week it has become obvious that the same thing can be achieved with a tweak to the Mach3 Script or the UCCNC macro for tool setting. This video shows how this works.There are advantages to  a software based solution such as infinate nominal thicknesses and the ability to use whatever tool setter you want. The toolsetter I made still has its place for those who want a hardware based solution of for those who are unable to impliment a software solution because of control software constraints.



Click to view


Please read this first.
The date included in the script will allow you to check if you have the most up to date version. There may have been changes to the script for bug fixes or feature inprovement so please check.

If you find an issue with a script or Macro please advise me ASAP so that a fix can be found and implimented. Use the contact form on this page.


Mach3 Scripts
There are 4 scripts available here split into metric and imperial and single plass and 2 pass touchoff.
All files are based on Big Tex's Auto zero setting script  Select the script you want to use and you will need to change the PlateThickness value to match your tool setter plate but other than the remaining values should be ok.

 Files updated 11/02/18 to add additional information in question box


http://bit.ly/2nGYeFJ 


UCCNC Macros
Macro courtesy of John Revill
Select either metric or Imperial and rename to M31.txt
Replace the Aluminium touchoff plate thickness value to match your own plate.
Replace the M31.txt in your UCCNC profile with the new one. 

This script is slightly diffrent from the Mach3 one demonstarted in the video. You need to enter 0 when setting to the surface of the stock as Enter will not work at this time. This will be updated ASAP so keep an eye out for this.

Script updated 09/02/18 to remove the need to enter 0 in question box. You can now just press the enter button if you are not using an offset. eg you have the toolsetter on top of the material.





http://bit.ly/2EbS3DZ


Thank you for watching  and I hope you fint this useful.
Feel free to leave a comment or any suggestions you may have.

Cheers
Peter