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Path: ...!Xl.tags.giganews.com!local-1.nntp.ord.giganews.com!news.giganews.com.POSTED!not-for-mail NNTP-Posting-Date: Wed, 17 Apr 2024 20:59:39 +0000 From: Joe Gwinn <joegwinn@comcast.net> Newsgroups: sci.electronics.design Subject: Re: PCB laser cutting Date: Wed, 17 Apr 2024 16:59:38 -0400 Message-ID: <sad02jlm386j4sc41f620q20k9cgp33v57@4ax.com> References: <uvnif3$1dg6o$1@dont-email.me> <r6pv1jhf6hcg8agp106gi0jbtpeaphb09n@4ax.com> <b8402j1kdm69hmuq0hshdmv2uh9pvhf341@4ax.com> <46802jlqo7i7n2pvrtfk97ma7mesfued30@4ax.com> User-Agent: ForteAgent/8.00.32.1272 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Lines: 54 X-Usenet-Provider: http://www.giganews.com X-Trace: sv3-wWV1UKX2LBgDIkxfE8DO3Cp4lFdIF92HGZkMFbUI+yuoecetcHXaZ60VWL1rPG54ZSpt4sApPp6RvgN!9DETvUV34m2WIFJPznm33nJyJEWeKRjm6EIF03u15tYxLidQVoeIQrMj6oADmknT+F2Fxgs= X-Complaints-To: abuse@giganews.com X-DMCA-Notifications: http://www.giganews.com/info/dmca.html X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly X-Postfilter: 1.3.40 Bytes: 2907 On Wed, 17 Apr 2024 12:23:47 -0700, John Larkin <jjSNIPlarkin@highNONOlandtechnology.com> wrote: >On Wed, 17 Apr 2024 14:13:47 -0400, Joe Gwinn <joegwinn@comcast.net> >wrote: > >>On Wed, 17 Apr 2024 08:09:30 -0700, John Larkin >><jjSNIPlarkin@highNONOlandtechnology.com> wrote: >> >>>On Tue, 16 Apr 2024 21:16:27 -0700, Don Y >>><blockedofcourse@foo.invalid> wrote: >>> >>>>I've been offered a small, 40W laser cutter and wonder if I >>>>want to make space to store it -- as I suspect I don't have >>>>many uses for it! >>>> >>>>One that came to mind would be cutting odd-shaped PCBs. >>>> >>>>But, I didn't think CO2 lasers were good with FR4, etc. >>>> >>>>(Or, could I opt for a different board material to >>>>exploit the laser's abilities?) >>> >>>We buy blue anodized boxes and use a Boss laser to blast the artwork. >>> >>><https://www.highlandtechnology.com/Product/J744> >>> >>>That saves a ton of hassle with labels and silkscreening. >>> >>>I tried using it to cut patterns into copperclad FR4, instead of >>>dremeling. It didn't cut copper very well and burned the FR4. Maybe >>>some fast pulsed laser would work better. >> >>Is this the CO2 laser or the fiber laser? >> >>Joe Gwinn > >This one is fiber. > ><https://www.dropbox.com/s/zxnwvk8w7pus7sr/Boss_1.jpg?dl=0> > ><https://www.dropbox.com/s/70py68edtigk8jf/J270%20Boss%20Laser%20Inside%20Box.mp4?dl=0> So its wavelength is one micron (CO2 is 10 microns). One micron is still infrared. Really need a green to UV pulsed laser to cut copper without burning FR4. But these lasers are hideously expensive. I have not researched it, but here is the German answer: ..<https://www.trumpf.com/en_US/products/lasers/disk-lasers/> Joe Gwinn