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#laser

1 post1 participant0 posts today
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jonathankoren™

Interesting. These aluminum plaques came with a plastic coating one side. The side without the plastic has a gold tint, but the side with the plastic is more silver.

It’s odd that my test crosshairs came out slightly different colors. I’m thinking multiple passes (which is what the numbers mean on the silver side) might clean up that gold tint. It just wasn’t an issue on the other side.

I had alignment issues with this. So I’m thinking I should drop a piece of wood in, laser out a hole, and then drop the metal into it.

It’s not *exactly* what I want, but it’s close. It’s real close.

I’m satisfied with size and the layout of the flight data recorder manufacturer plaque as well.

I think this is good enough.
#BuildInPublic #laser #maker

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Foncu 🐞🌹

Me gusta escuchar el programa de #LaSER "un libro, una hora" en formato pódcast. Cómo su nombre indica, resumen el contenido de un libro en una hora. Hoy he salido a correr y he estado escuchando "La vuelta al mundo en ochenta días" de Julio Verne. Y me he pasado la hora completa odiando al protagonista. Un ricachón impasible que lo único que quiere es demostrar que tiene razón. Y que como es rico se cree que puede ir comprando, sobornando y convenciendo a la gente a base de dinero: que si me compro un elefante, que si me compro un barco, que si ahora quemo el barco porque lo he comprado. 1872 y los ricos dando el mismo asco.

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DB Schwein

Ok, weird question.
Do I know anyone who wants to buy a diode craft laser but can't stomach the ~$1,100USD price tag? I ask because as a Glowforge owner I've been given a one time 50% off coupon, but I already have my laser!

This is the machine. AFAIK it's 50% off the machine, not any accessories. It's a great machine for engraving, and light cutting. Note that diodes cannot cut clear or blue materials (same wavelength as the laser).

shop.glowforge.com/products/gl

#Laser
#Crafting
#GlowforgeAura

shop.glowforge.comGlowforge Aura
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Denkodama

And finally, I had to to a little job to check the maintenance operation (laser alignment) had good results, so I used a wood leftover to engrave something nice. I went for "Framasoft campaign 0 Main menu" par @davidrevoy , @Framasoft − CC-BY 4.0 (this image was designed for Framasoft's 2017 campaign "Contributopia", I really like it !)
Here is the original picture :
peppercarrot.com/fr/viewer/fra

Still made at the @RoseLab in Toulouse
#lasercut #LaserCrafting #laser #toulouse
3/3

A wooden engraving of an image showing three giant trees, two of them floating in the air ; they are connected with each other and with the ground by cloud stairs and bridges. Cats seem to live in the branches. One of the branches carries the moon
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Dalia_Z

I have been labeled as a lurker here. TRUE! I will attempt to share more, because I do love seeing what all of you are up to. I have time for hobbies! I have joined a local makerspace a few months ago and have loved the challenge of using new software to design and implement physical projects. The photo shows the birch boxes I made for my family for the holidays- with relevant images for each. (Also- candied & spiced nuts!) #laser #maker

Three open birch trays, laser cut with visible joints at the corners, laser printed with various images such as a baby, (for new grandson), a heart with two rings (daughter got married), stylized holiday tree, etc. The trays have 2 compartments each and contain homemade candied nuts in clear bags.
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emily, blinkenlight witch

Weird #laser #physics thing I would like explained in "I understand basic physics but not advanced fancy physics" terms:

Fiber lasers seem to be the way to go for cutting copper. There are several youtubers doing it with lasers in the 20-30W range.

But (most? all?) fiber lasers emit wavelengths somewhere in the infrared range. Copper is highly reflective to infrared, enough that it can be used to make *mirrors* for infrared lasers.

Why does this work so well, but if I point my 20W 455nm diode laser* (which should be absorbed a lot better by copper) at a blank PCB, it just heats up a spot until the glue/FR4 behind it vaporize and make a bubble of undamaged copper instead?

edit: Someone elsenet suggested it's because fiber lasers are 20W average but in very short pulses of much higher power, so the heat wouldn't have a chance to dissipate away. That makes sense, but obvious followup question: can you make a UV laser (not necessarily diode based) that pulses in the same way?

* lasertree.com/products/laser-t if more information is relevant to an answer

lasertree.comLASER TREE K20 20W Optical Power Laser Module
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💧🌏 Greg Cocks

Edge Of Mars’ Great Dichotomy Eroded Back By Hundreds Of Kilometres
--
arstechnica.com/science/2025/0 <-- shared technical article
--
dx.doi.org/10.1038/s41561-024- <-- shared paper
--
#GIS #spatial #mapping #planet #Mars #remotesensing #imagery #landsurface #geology #topography #astrogeology #elevation #morphology #martian #geography #marsdichotomy #plateau #lowlands #model #3dmodel #basin #highlands #shoreline #ocean #crust #structuralgeology #chemostratigraphy #morphostratigraphy #geomorphometry #geomorphology #water #hydrology #CaSSIS #HiRISE #stratigraphy #strata #MOLA #laser #LiDAR #MawrthVallis #crater #mound #profile #crosssection #geochemistry #mineralogy #CRISM #CTX #HRSC #DTM #erosion #weathering #spatialanalysis #spatiotemporal

images - Morphological similarities between the stratigraphy in the mounds and the Mawrth Vallis plateau region
3D model, map, images and charts - Chemostratigraphy and morphostratigraphy of a well-exposed mound
3D map and cross section - Three-dimensional view of study area with stacked elevation profiles
image/map - the topography of Mars by the Mars Orbital Laser Altimeter (MOLA)
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