{"id":333,"date":"2014-07-06T12:20:28","date_gmt":"2014-07-06T16:20:28","guid":{"rendered":"http:\/\/jimlund.org\/blog\/?page_id=333"},"modified":"2017-08-12T15:55:13","modified_gmt":"2017-08-12T20:55:13","slug":"cnc-build-and-use-notes","status":"publish","type":"page","link":"https:\/\/jimlund.org\/blog\/?page_id=333","title":{"rendered":"CNC build and use notes"},"content":{"rendered":"

Using a CNC<\/strong>
\nMilling 101 Understanding Milling Bits<\/a><\/p>\n

Laser head<\/strong><\/p>\n

Casio XJ-A140 video projector blue laser source–24 x 1.5 Watts 445 nm blue laser diodes collimated
\n<\/a>
\nNUBM44, 5W – 7W 450nm laser diodes
\n -Reported to have poor beam quality.
\n -focusing: link<\/a>
\n -focusing: the G2 is the best lens; fine tuned the Cylindrical lens to lens distance, critical to achieve the minimal divergence. Just a .1mm movement will cause a change in the Far field divergence.
\n -lens: 405nm\/445nm\/515nm Laser Lens\/MP9x9mm\/Laser Collimation Glass lens 1 pcs<\/a>
\n -lens: aspherical single element lens gives smaller spot w\/ some power loss; three element lens which has higher optical power loss but gives an even smaller beamspot<\/p>\n

“We have our focal distance set at 2″ with this build, but by our experience, 3″ distance has worked out the best for image engraving with the 2-3W LD’s.”<\/p>\n

NUBM07E, 2.9W 445nm laser diodes
\n -focusing: link<\/a>
\n Nominal Ocular Hazard Distance for 6W @ 2mR is approximately 1000 feet<\/p>\n

900mW 405nm, single mode diode, $90 ebay Can be focused to a much smaller spot<\/p>\n

Good spot size: NDB7875, driver at 1.7a-1.8a max with a 3 element glass lens or J-Tech’s lens<\/p>\n

445nm laser diode 2W driver, pdf<\/a><\/p>\n

Saftey glasses:
\n LASER SAFETY GOGGLES 190-532nm, $85<\/a>
\n -190-449nm OD5+, 450-532nm OD6+
\n Eagle Pair 190-540nm & 800-1700nm OD5 Laser Safety Goggles, $65<\/a>
\n -OD 5+<\/p>\n

Router\/Spindle Variable speed control
\nAC dimmer<\/a><\/p>\n

Power supplies
\nComputer power supply, 850W, 78A at 12V, $70<\/a><\/p>\n

Milling advice<\/strong>
\nMilling speed selection<\/a><\/p>\n

Waterjet info<\/strong>
\nWaterjet descriptions (pdf)<\/a><\/p>\n

\nWater pressure (psi) water speed (ft\/s)
\n1000 385
\n5000 861
\n10,000 1218
\n50,000 2724<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"

Using a CNC Milling 101 Understanding Milling Bits Laser head Casio XJ-A140 video projector blue laser source–24 x 1.5 Watts 445 nm blue laser diodes collimated NUBM44, 5W – 7W 450nm laser diodes -Reported to have poor beam quality. -focusing: link -focusing: the G2 is the best lens; fine tuned the Cylindrical lens to lens […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"open","template":"","meta":{"footnotes":""},"class_list":["post-333","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/jimlund.org\/blog\/index.php?rest_route=\/wp\/v2\/pages\/333","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jimlund.org\/blog\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/jimlund.org\/blog\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/jimlund.org\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jimlund.org\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=333"}],"version-history":[{"count":12,"href":"https:\/\/jimlund.org\/blog\/index.php?rest_route=\/wp\/v2\/pages\/333\/revisions"}],"predecessor-version":[{"id":854,"href":"https:\/\/jimlund.org\/blog\/index.php?rest_route=\/wp\/v2\/pages\/333\/revisions\/854"}],"wp:attachment":[{"href":"https:\/\/jimlund.org\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=333"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}