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Messages - bob2299

Pages: [1] 2 3 ... 6
1
Cutting / Re: New To Cutting and Need Some Advice
« on: August 30, 2018, 11:54:21 AM »
Hi wweagle81,

I had a lot of trouble wrapping my head around Inkscape, vectors, and bitmaps before I finally am able to get fairly consistent results.  To make life easier I made myself a workflow for preparing a DXF for use with T2.  I used the Celtic knot you started with in this topic to produce the steps and screengrabs.

I use my drawings for making Christmas decorations out of veneer stock and 1.5mm basswood.  I can do a similar write-up for burning my decorations using T2 if you think it would help.

Hope this helps you.

Bob

2
T2 Engraving / Re: What causes streaks?
« on: August 26, 2018, 11:58:26 AM »
Thanks to you both, nice easy correction.  Now DXF files work as expected.

Bob

3
T2 Engraving / What causes streaks?
« on: August 24, 2018, 11:56:59 AM »
I have this pattern for a decoration that is giving me grief.  It looks OK in Inkscape but when I save it as a DXF file and import  into T2 I get streaks running at about 45 deg.

Any suggestion as to the cause of the streaks and how to correct this? 

I have attached the file in png, svg and dxf format plus screen grab of the fault in T2.

Bob

Wrong png file attached, corrected same

5
Trouble Shooting / Re: MonoPrice Selct Mini printer problem
« on: April 19, 2018, 09:46:53 AM »
Great, thanks for the help.  Now back to 100%.

Bob

6
Trouble Shooting / MonoPrice Selct Mini printer problem
« on: April 18, 2018, 03:31:00 PM »
I am experiencing a problem with my Monoprice select mini. It has worked like a charm since I bought it 6 months ago.

Today it started a job and went to the start point and stayed there and made a noise but didn't move.  I cancelled the print and homed the printhead and it finished up pushing down the metal plate and stayed in a depressed mode.

I tried to reprint a job, it wanted to print into the plate rather than on it.  I checked to ensure it was leveled.  Head kept below and I tried adjusting the leveling screws but no luck, the nozzle still wanted to bury itself into the plate.  I am unable to lower the front left screw enough to get any clearance.

I had had a few Static electricity jolts in the house due to low humidity and wondered it that may have effected the firmware, so updated the firmware to V41.110.2 just in case. No improvement.

If I had to guess what may be the problem it is that the "Z" lead screw may have skipped a bit thus being lower than it should be, is that possible?

Has anyone had a similar problem or have any suggestions for resolving this issue?

Bob

7
General Discussion / Re: Pproblem with a stamp
« on: March 31, 2018, 07:39:28 AM »

Here is a photo of the stamps mounted on wood and acrylic handles and an imprint.  My friend is planning to place gold stamp impressions on wooden, turned lacquered boxes.  Will post photo when completed.

Bob

8
T2 Engraving / Re: Is T2 likely to stop while multi-tasking
« on: March 29, 2018, 05:28:03 AM »
Thanks for the explanations, I will just have to dedicate my laptop computer to the laser while it is running and use my desktop for other things as I wait for laser jobs to finish.










Bob

9
T2 Engraving / Is T2 likely to stop while multi-tasking
« on: March 27, 2018, 01:42:27 PM »
I had a project stop mid-way after an hour.  No apparent reason.  Was not able to restart,  so had to start all over.  Worked fine on a fresh start.

I was multitasking at the time, had several copies of Inkscape open.  Was doing some typing on another program (Evernote) when the stoppage happened.  Am I overloading my computer and T2?

Any thoughts?

Bob

10
General Discussion / Re: Pproblem with a stamp
« on: March 21, 2018, 01:45:00 PM »
I finally received my low odour stamp rubber from China by way of Thailand.  6 weeks!

Lasered several stamps with good results.

I prepared the drawings in Inkscape, saved as png files.

Loaded png file into T2.  Using T2 edit menu I flipped vertically and then inverted drawing.  This gave me proper orientation for the stamp to print properly.

Using T2 I set my size 37mm x 37mm, laser power 100%, resolution 0.05mm, Greyscale, diagonal.  Lasered 4 passes to get total depth of cut of approx 0.040" (tried 0.06 and 0.07 resolutions and found it cut well and left a vertical patterm but it did not effect the stamp and was a little faster).  I vaccuumed the stamp after each pass and then brushed with a stiff bristle and again vaccuumed.

Thanks to Zax and Mauriceman for their help and suggestions.

Bob

11
Cutting / Re: Air Assists Compared?
« on: March 21, 2018, 11:37:03 AM »
I used PawPaw's air assist with the current A3 laser kit. 

I removed and discarded the blue aluminum piece.  I mounted  the air assist to the laser, then fastened the laser to the clear plastic piece that the blue aluminumiece was attached to.  Took a few minutes but works fine.

Bob

12
General Discussion / Re: Pproblem with a stamp
« on: February 06, 2018, 07:11:27 AM »
Thank you both for all the help and suggestions.  Now I will wait for my new rubber to arrive and go to it.  I'll post results then, again, thanks.

Bob

13
General Discussion / Re: Pproblem with a stamp
« on: February 04, 2018, 03:29:45 PM »
Hi Zax,  I thought there were two types of files that we work with, raster and vector.  I thought hatch was a specialized version of a raster file.  Am I wrong in my understanding?

When I started this topic it was because I was getting a rough edge to the elements of my stamp as seen in my photos. I was using a DXF file.  I was trying to use sketch plus to get a vector outline of my elements and smooth their outlines.

To make the stamp requires burning away about 0.040" of the rubber and requires several passes.   After several passes I found the edges somewhat ragged and thought the sketch plus feature would give a pass using the vector outlines of the elements.

You suggested that I might have this wrong and suggested I work with PNG files and how to do it.  This worked better and enabled me to use sketch plus and hatch successfully.  I have no more stamp rubber so continued using wood veneer to practice with.

Since I needed to do multi-passes with sketch hatch and sketch plus enabled, I need to use a laborious workflow of multiple pass runs which does the cut-away portion and finish with a final pass where sketch plus is enabled too.  This give me the final hatch pass with the vector outline of the elements too.

If there was a feature called multi-pass (hatch) it would simplify these depth cutting operations for stamp making and for inlay work as well. 

I hope I have explained what I am doing and what I am after.

Bob


P.S. You also mention using DXF files but after using the PNG files PNG seem the better option.  I'm not sure where using different speeds is relavent to stamping






14
General Discussion / Re: Pproblem with a stamp
« on: February 04, 2018, 12:39:04 PM »
Hi Zax,

OK, I can get good raster engraving plus vector outline. 

For a stamp I need to do multiple passes to cut part way through the rubber and then finish with  a single vector "clean-up" pass.  I tried setting multi passes at 2 but while it did a single raster pass it did 2 vector passes and the job was done.  This is expected as multi-pass is designated for vectors.

Is there a way to do multiple raster passes and finish up with a single vector outline "cleanup" pass?  As set up now T2 only can do multiple vector passes.

This can be done manually by repeating the raster pass by running the g-code as many times as needed, then the last pass can include the vector pass.  If only doing one stamp the multi-run method will work but for multiple set-up it becomes labourious.

This procedure would also benefit veneer inlay projects too where you want to burn an inset with a clean edge into which you insert your inlay piece.

Would this be possible or am I asking for a new feature beyond T2's scope?

Bob

15
General Discussion / Re: Pproblem with a stamp
« on: February 04, 2018, 10:44:44 AM »
Hi Zax

That's better.  Used PNG, hatch at 0.15, traced image elements, and set sketch plus.  Did excellent raster and finished up with vector trace of pictures elements.  Having invert and flip in T2 beats using Inkscape for those functions.

Mauriceman,

Your stamps are great, a goal for me to aim at.  I have grey low odour rubber on order, should be here in a few days.  Will post my results.

Bob


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