Messages

7021

General Mach Discussion / Re: THIS IS DEDICATED TO "HOOD"

« on: May 01, 2010, 08:08:58 AM »

I second it all 'Hood is the greatest'. His assistance and knowledge is invaluable to us all. Thank you Hood.

Tweakie.

7022

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

« on: April 30, 2010, 01:14:15 PM »

I think I ate the roadrunner bit, that just left Wile. 

Tweakie.

7023

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

« on: April 30, 2010, 12:58:32 PM »

I had boiled eggs for breakfast this morning and while I was dunkin my soldiers I thought " I wonder if..... ".
The answer is yes you can. 

Tweakie.

7024

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

« on: April 28, 2010, 10:27:10 AM »

Hi Dan,

Thanks for the suggestions / ideas - anything and everything is appreciated. I have just so much learning to do here.

Tweakie.

7025

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

« on: April 28, 2010, 08:10:17 AM »

Hi Dan,

Yes it does have a draft angle because the beam converges from the lens to the exact focal point whereupon it diverges again. I am currently looking at ways to improve this situation either by using a lens with a greater useful focal length or multi-pass cutting at reduced power with Z movement resetting the focal distance on each pass.

The edge finish is not perfect with some vertical styrations similar to a bandsaw cut but at least it is polished and so looks acceptable - I need more practice and experience here !.

The picture was taken with flash and the acrylic is on a sheet of brushed alluminium - Quite a nice effect I thought !.

I will post some more pictures when the camera battery has been recharged.

Tweakie.

7026

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

« on: April 28, 2010, 06:52:41 AM »

By way of an update on this project:-

The DRO struggled to display the tube current a low power settings and has been replaced by a retro moving coil panel meter straight out of the 1960's. A new scale was engraved with the laser and a suitable shunt fitted to calibrate the meter.

   

This is my first attempt with cutting acrylic. The red is 2mm and the clear is 6mm thick.

   

Tweakie.

7027

Show"N"Tell ( What you have made with your CNC machine.) / Re: COLLIMATOR MODIFICATIONS, BASE , AND TRIVET STAND

« on: April 28, 2010, 06:44:59 AM »

Great work Rich.
How did you make the targets please ?.

Tweakie.

7028

Share Your GCode / Re: He's just a Wile and crazy guy!

« on: April 26, 2010, 04:28:27 AM »

Hi Sam,

I export as HPGL (which is where the arcs become the many straight lines) then convert this to the GCode with a simple converter program.

Tweakie.

7029

General Mach Discussion / Re: Any Microscribe users in here?

« on: April 26, 2010, 01:54:16 AM »

Seems that Rhino is looking at a different file or getting it's data from the registry settings perhaps.

Tweakie.

7030

Share Your GCode / Re: He's just a Wile and crazy guy!

« on: April 26, 2010, 01:50:24 AM »

Thanks for the information Sam.

I am still in the dark ages using Adobe Illustrator and Acme Trace Art or TurboCad.

Tweakie.