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Messages - ggallant571

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General Discussion / Re: servos dont move
« on: Today at 02:12:25 PM »
T2 has the required firmware and update tools.

General Discussion / Re: servos dont move
« on: July 16, 2018, 08:20:46 AM »
The Arduino Nano CPU board? Post a picture.

General Discussion / Re: servos dont move
« on: July 16, 2018, 07:17:37 AM »
Did you plug in the steeper drivers upside down? (Never personally done that :-X)

Cutting / Re: My "pin table" for eleksmaker
« on: July 16, 2018, 07:15:33 AM »
I thought I saw one pin misaligned.

1. @Zax - does it burn ok on you setup?
2. I use Linux and svg files. The conversion from dxf to svg was absolute junk.
3. Converted from dxf to png but the scaling was was off. Perhaps it is missing the units.
4. Is the problem on shape starts, ends, or someplace in the middle?
5. Is it repeatable? Isolate one or two faulty shapes and test.
6. Test burn on cardboard with low power. Does it complete ok? Up the power and retest.

BTW - I opened the dxf file in 3 different viewers. All displayed ok. Converted wrong.

Please post a design file that exhibits this behavior. Looks like the individual shapes are not closed.


Do you have random low intensity junk in the design file that only burns the mirror when etching slowly?

I don't understand the square wood looking pattern. Are you burning thru the mirror or from the back side? I usually put a piece of white paper on the waste board to protect the surface from scratches. Suspect it helps keep the char from the waste board from getting on the surface.

What power laser do you have?

T2 Engraving / Re: Need help with grayscale/dithered
« on: July 10, 2018, 06:17:08 PM »
Don't forget acceleration. If it is too low the unit will never get up to speed and just linger on a small area.

I do about 5 mirrors per week and have no idea what your first 2 pictures represent. If you post the design file I will examine.

Some notes:

   1. There are at least 2 layers of coatings on the back side of typical mirror.
   2. It is possible to burn off just the reflective layer and not touch the glass.
   3. It is possible to fracture the glass.

You can get a 3D look by just burning the paint and reflective layers, leaving the glass untouched, and applying more heat elsewhere to get a frosted appearance. It takes testing and varies with each vendors product.

T2 Engraving / Re: arc text
« on: July 10, 2018, 06:27:46 AM »
In T2?

T2 Engraving / Re: arc text
« on: July 09, 2018, 03:52:14 PM »
Which tool?

Pleas post a gcode file that faults. The Nano has a very small buffer for incoming commands. Most host software tries to keep slightly ahead
 of the physical motion by monitoring the "ok" or "error" response codes. If your files is very verbose (lots of extra decimal digits) in the X,Y.Z moves you might end up overwriting the buffer.

Projects / Re: Aztec Star Wars on bamboo chopping board
« on: July 08, 2018, 01:42:26 PM »
Printed, assembled,  programmed, and a total bust!! The lines cut thru the mirror are apparently very pp;arized and only the light directly behind the cut makes it thru. Damm that really crisp burning laser!! Need a light source that is much more intense and diffused. Thinking about:

1. Painting the inside of the box with sliver mirror paint and mounting the the led ring upside down such that it reflects off the bottom.
2. Using an additional inner ring of LEDs.
3. Building a circuit board with many more LEDs.

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