Messages

7681

General Mach Discussion / Re: help with motor torque

« on: September 15, 2010, 09:03:58 AM »

Your current settings are dip switches 1 & 2 as follows :-


setting      1          2

100%       on       on
75%         on       off
50%         off       off


You would be wise to look up your motors maximum current rating as specified by the manufacturer.

Tweakie.
 

7682

*****VIDEOS***** / Laser Raster Engraving.

« on: September 15, 2010, 07:10:03 AM »

I have already posted this under the laser project thread but it is perhaps helpful to have video's all in the same place.

This is my video of laser cutting the Mayan calendar into Obechi. It's really quite boring, like watching paint dry, but the music is good 

                                                          http://www.cooperman.talktalk.net/Aztec2.wmv

Tweakie.

7683

General Mach Discussion / Re: help with motor torque

« on: September 15, 2010, 07:02:11 AM »

Hi John,

Sounds like you are not supplying enough current to the stepper. Most boards have some form of current adjust, check the max current specified for your motor and adjust the board current accordingly. Although the motor voltage can be exceeded by many times the motor's rated current should never be exceeded so it is a careful adjustment.

Hope this helps,

Tweakie.

7684

Show"N"Tell ( Your Machines) / Re: The Laser Project.

« on: September 15, 2010, 06:19:34 AM »

Hi Dan,

Glad you liked the video. Sadly I can never do high quality because my web host doesn't like me posting large files and I haven't yet mastered YouTube 

That's true speed but the video is compressed down to 3Mb so there are probably a lot of frames missing and it perhaps looks faster than it really is. The X Axis feedrate is 4500mm/min but because of the combined mass of my X and Z the acceleration/deceleration is set low so the axis only just reaches around 4000 at the centre of it's travel on this 90mm diameter piece.
The one in the video is wood, it's Obechi and yes I have a good extractor system, this is one big essential for laser work.    (the near neighbors haven't complained yet but if they do then I will have to fit the HEPA filters etc uggg).

Tweakie.

7685

Show"N"Tell ( Your Machines) / Re: The Laser Project.

« on: September 15, 2010, 04:54:47 AM »

That looks awesome Tweakie. It would be neat to see that being made. (hint hint, nudge nudge)

Here you go Sam - It's a bit like watching paint dry    (ignore the intro spelling mistake) . http://www.cooperman.talktalk.net/Aztec2.wmv

Music is good though. 


Tweakie.

7686

Show"N"Tell ( What you have made with your CNC machine.) / Re: Milling Vise for pocket work

« on: September 15, 2010, 02:58:27 AM »

Excellent work Ken.

Tweakie.

7687

Show"N"Tell ( What you have made with your CNC machine.) / Re: Couple of simple gifts...

« on: September 15, 2010, 02:55:02 AM »

Excellent work Dave. I would like to see more of this.

Tweakie.

7688

General Mach Discussion / Re: rounded corners

« on: September 15, 2010, 02:48:24 AM »

Sounds silly but are you looking at the tool radius as being your rounded corners ?

Tweakie.

7689

Show"N"Tell ( Your Machines) / Re: The Laser Project.

« on: September 15, 2010, 02:01:04 AM »

Hi Sam,

There is quite a lot of smoke and debris with raster scan and I don't think a video would be too interesting but I will give it a go. In the meantime here it is half done 

Tweakie.

7690

Show"N"Tell ( Your Machines) / Re: The Laser Project.

« on: September 14, 2010, 05:56:18 AM »

Both X and Y are 16mm dia. x 5mm pitch pre-loaded (twin ball circuits) not certain but I believe they are from NSK (Japan) same as linear rails.

Tweakie.