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Messages - bob2299

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1
General Discussion / Stop and restart in the middle of a burn
« on: July 25, 2020, 12:37:23 PM »
I am burning some patterns that take a long time and must leave in the middle of the job.  I do not feel it safe to let the job continue unattended.

What would you reccomend as the best steps to use to stop and then resume later at thee same spot we stopped?


Bob

2
General Discussion / Re: An extra line in my DXF file
« on: May 14, 2020, 11:57:45 AM »
Thanks for the explanation.

Bob

3
General Discussion / Re: An extra line in my DXF file
« on: May 14, 2020, 08:05:05 AM »
Thanks Zak!

How did you find this out about the lack of a finish point?  Everything in the svg file looked OK to me.

When would this LWpolyline option be used since it was the Inkscape's default on this screen?

Bob
 

4
General Discussion / An extra line in my DXF file
« on: May 13, 2020, 01:06:59 PM »
I have a file I am using for veneer inlay.

The image looks like a tree but is the outline of a flower.  This will be the pocket of the inlay.  It was created in new Inkscape 1.0 and saved as a dxf file using the Desktop cutting plotter (AutoCad dxf14)(.dxf).

The image looks OK but when I process with T2 I get a straight line from the petal to the bottom of the stem.  I recheck my drawings in Inkscape and can not find this line anywhere so I can remove it.

Copy  of my files attached as welll as a screen grab from T2.

Any suggestions?

Bob

5
Other Software / ImagePaint
« on: February 19, 2020, 01:31:57 PM »
Has anyone used or have any knowlege of ImagePaint (https://amazoncanvas.com/ ). 

This is program for making vector toolpaths for veneer used in marquetry which could be inputs for T2. 

Program looks to excel in custom placement of cut pieces on veneer to take advantage of grain patterns and rounds points to improve fit of male/female pieces.

It is used in conjunction with Adobe Illustrator.


Bob































































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6
General Discussion / Re: Sizing engraving to match Inkscape size.
« on: December 12, 2019, 10:21:08 AM »
Here is sample of finished medallions sizes 3/4".


7
General Discussion / Re: Sizing engraving to match Inkscape size.
« on: December 09, 2019, 05:07:13 PM »
OK, I reset defaults on T2.

Added a border around my inkscape file.
Selected all,
Object to path,
Saved as DXF file,
Imported DXF to T2.

File loaded in proper spot as shown by overlay details and "output size" as 300.9mm x 99.9mm.
 
Looks like it works now, will run a sample tomorrow and make some notes for next time!

Thanks for both of you for assistance.

Bob

8
General Discussion / Re: Sizing engraving to match Inkscape size.
« on: December 09, 2019, 01:42:15 PM »
Here is the DXF  file I am using.

9
General Discussion / Sizing engraving to match Inkscape size.
« on: December 09, 2019, 11:46:18 AM »
I am making signature medallions to be inset into bottom of turned bowls.

I have sized my medallions in Inkscape at 19.5 mm diameter and wish to engrave and then burn/cut them at 19.5mm diameter from 1.5mm basswood.  The medallians will then be glued into a pocket made by drilling with a Forstner bit, so accuracy counts.

The problem I have is that when I import the dxf file to T2 it comes in at a different size (larger).  How do I get the size to match?
The Inkscape page is sized at 300 x 100 mm, it imports into T2 as 392 x 241 mm.   I tried resizing the output in T2 but I am unable to resize it to 300 x 100mm.  If I change to 300mm width it resizes the height to 241mm.  If I unlock Aspect and change height and width I lose the circle shape.

Copies of my Inkscape files are attached (circles in svg, png, and dxf), any suggestions would be appreciated.

Bob

10
General Discussion / Re: laser venting
« on: September 12, 2019, 11:36:11 AM »

I am in an apartment.  I have my unit (2.5 watt) set up on a table ajacent to my window.  When in use, I use a medium size home fan with about a 10" blade set in front of my window which is open about 10" and is blowing air from the room to outside.  Air moves from Laser unit to fan to outside a distance of about 30" from laser to outside.

No smell of burning wood in the room so I believe it is doing the job.

11
Engraving / Re: Machine stopped mid job????/
« on: August 18, 2019, 08:44:43 AM »
Thanks for the tips.  Iwas able to save the job by re-registering the file, rerunning the file and turning the laser beam off until it reached the stop point, then tuning the beam on for rest of job.  I will post a picture once I get the platter finish applied.

Like your suggestion for future jobs, particularly breaking big job into several smaller ones.

I have 3d printed lifts to raise the laser engraver.  Diferent height lifts would give me better laser focus whereas the way I did it as single burn the focus range was at its limit.

In any event need more work on my technique.

Bob

Photo attached - platter is 9.5 inch diameter and is Box elder (Manitoba maple) with Tung oil finish.  Lousy photo, but you get the idea.

12
Engraving / Re: Machine stopped mid job????/
« on: August 16, 2019, 06:52:18 AM »
Thanks Zak, but no error messages on computer screen or on T2 screen, everything just stopped.

I will try to recover by re-running the job but with laser beam off.  Once I get to the point where the job stopped I will reactivate laser beam and continue the burn. 

13
Engraving / Machine stopped mid job????/
« on: August 15, 2019, 05:07:07 PM »
I am in middle of 5 hour burn on a turned 9 inch maple platter and my machine suddenly stopped.  My computer is dedicated to laser use only, so should not be any interference.

Any suggestions as to what might have happened and is there is a way to restart and finish the job? 


Bob

14
Projects / Re: Mayan calendar on slate
« on: August 02, 2019, 05:13:06 PM »
Thanks Zak, will use your advice particularly for my next big job.

For Ggallant571, c.lfrost,  and Carolynsdad, I have been using MinWax spray poly after the laser run, I will change my habit and apply it before laser run and see the difference.

Thanks to all.

Bob

15
Projects / Mayan calendar on slate
« on: August 02, 2019, 01:01:28 PM »
Always wanted to try this on a larger piece of slate.  Went to local tile shop and they ordered me several pieces of "black" slate 12"x12"x1/4" at a cost of $4.50 cdn. per piece

Settings used with T2 were; resolution 0.10, speed 1000, power 100%, B&W .  Slate was washed first to remove debris.  There is a small flaw about 1:00 which didn't cut very well.  Completed job was sprayed with MinWax spray poly to bring up contrast once completed.  This slate was not as black as I have seen with slate coastes from Michaels which likely accounts for the level of contrast.

Looks pretty good, but would have liked it larger than the 9x9".  I ran into limits on lines that T2 would handle when using a larger size like 10"x10" or 11"x11".  Gcode was 600,00 lines and took 400 minutes to print.

Bob

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