From: Bdale Garbee Date: Fri, 22 Jan 2021 09:40:44 +0000 (-0700) Subject: pointers to the laser module I bought and why X-Git-Url: https://git.gag.com/?p=web%2Fgag.com;a=commitdiff_plain;h=01f2350f1767190564df329d7e987ac00e7ab6d3;ds=sidebyside pointers to the laser module I bought and why --- diff --git a/pcb/laser/index.mdwn b/pcb/laser/index.mdwn index b2d21c4..1cd843b 100644 --- a/pcb/laser/index.mdwn +++ b/pcb/laser/index.mdwn @@ -5,4 +5,17 @@ associated with them. After trying stickers, and spending years using a fine-tip Sharpie pen to write on a silk screen rectangle, we've decided to try a laser engraver instead. +Digging around on the web, we found an article on +[laser marking circuit boards](http://https://jtechphotonics.com/?p=1164) +that made it clear this was something we should be able to do with a 1W +laser module. Since Bdale had a spare [Lulzbot](http://lulzbot.com) TAZ 5 +printer sitting around unused, and the J Tech folks had a pointer to a 3d +printable mounting bracket that can replace a TAZ head, we decided to give +one of their [1W 405nm](https://jtechphotonics.com/?product=900mw-405nm-laser-and-2-5amp-safety-compliant-driver-kit) + packages a try. A big motivator for going with this +laser module instead of one of the higher power units (which might have had +other uses) was that this module can focus down to 0.003 inch spot size! +Since some of our circuit boards are quite small and we're way up in the +4 digits now, being able to engrave thin lines seemed like a good plan. + More details to come...