[Resolved] Copyright Violation -- please attribute on wiki

martinbogo · July 19, 2018, 4:56pm

Hi Dallas Makerspace-ians,

Please add attribution on your Laser Wiki… a large portion of it is basically cut-and-paste from the ATX Hackerspace wiki. This is okay in general, since we did publish under an open source license, but it does require credit and attribution if you do so under those terms. Please link back to our Laser Wiki page, or just add a credit saying where the information came from.

https://dallasmakerspace.org/wiki/Laser_Cutter_Materials

http://atxhs.org/wiki/Laser_Cutter_Materials

Sincerely,
Martin Bogomolni
Founder ATXHS ( and author of that page )

jast · July 19, 2018, 5:07pm

We did thank you for the information here

which appears to satisfy your request to

Thank you, again, for doing an excellent job, and allowing others to build from it.

PS: moved attribution line to the top, included the name of the author, links to main page of ATX and the laser cutter materials specifically as well.

HankCowdog · July 24, 2018, 6:03pm

To clarify: according to the Wiki history, the ATX Hackerspace attribution has been in place since the original posting of the information back in Sept 2015. Martin (@martinbogo) may have overlooked it since it was at the very bottom of the page.

martinbogo · July 24, 2018, 7:29pm

The original research was looking at the decomposition of ABS:

https://www.researchgate.net/publication/229949178_Acrylonitrile-butadiene-styrene_copolymers_ABS_Pyrolysis_and_combustion_products_and_their_toxicity-a_review_of_the_literature ( Paywall for paper – sorry )

The international (OSHA NIOSH ACGIH) maximum allowable exposure to HCN is 4.7ppm.

I tested laser etching a flat piece of 2mm ABS ( used for vacuum forming ) and put an HCN detector in the exhaust tube to catch the fumes for 60 seconds with a flat rastered rectangle at 30% power / 50% speed on our PLS 6.60 laser cutter. This was back in 2011 or so – and we saw about 0.4->1.2ppm HCN emissions during rastering, and about 0.2-0.8ppm HCN emissions when cutting.

YMMV, and good science says you should set up a similar experiment and re-test… peer review is important.

martinbogo · July 24, 2018, 7:30pm

Thank you! Much appreciate it!

hon1nbo · July 24, 2018, 10:15pm

Previous facilities I’ve been in, including ones where the exhaust went in room after some filtering, ABS was never an issue with HCN. We still prohibited Polycarbonate, but we used to laser ABS panels for pelican cases there all the time. Was disappointed I can’t do them at DMS and they’re not worth making out of acrylic.

I’d be interested in helping retest this should it come to that.

Cheers,
-Jim

talkers · July 24, 2018, 10:35pm

@martinbogo. Thank you for sharing the information.

Come visit our space

martinbogo · July 24, 2018, 10:45pm

I love coming by Dallas Makerspace! I don’t get enough opportunities to go there these days … not enough reasons to make the drive from AUS->DAL.

You bet that next time I’m there, I’ll stop by.

-Martin

heyheymama · July 25, 2018, 7:57pm

Joining the Committee is absolutely The Way to pursue a permanent rules change.
I have added this to the Agenda, which can be edited under the slide in the first post here: [LASERS DOWN] Maintenance Day + Committee Mtg + FOOD, Sun Aug 5 2018, 11a-2p.