<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Mike,<div class=""><br class=""></div><div class="">I have boxes and boxes of “do something with these someday”. Someday I will be buried in them. </div><div class=""><br class=""></div><div class="">I have never seen a Marimba Lumina up close. From the pictures, I can say “absolutely”. I HAVE seen many Buchla things up close. </div><div class="">700 is a membrane panel like a Moog Source. It has some resistant strips to make linear “sliders” Every one I’ve seen has some dead spots (They made 12 and Ive seen 4)</div><div class="">Thunder membrane panel</div><div class="">296e PCB with white solder mask covered by a clear membrane with a frame around it. </div><div class="">216, 217 aluminum panel with only the key section a PCB attached, made from blue FR4 with tin plated keys and then clear coated with something that I’m sure is toxic and no longer allowed</div><div class="">218, 219, 221 two layers of PCB epoxied together with bass frets glued into slots cut in the PCB lower layer blue FR4, top layer red FR4 both with tin plated keys and clear coat. clever “vias” to connect the PCBs together.</div><div class=""><br class=""></div><div class="">The panel for the Marimba Lumina would have to be a single PCB, at least the half (obviously). I can’t even imagine the coast of one or the amount of counseling that they would have had to do with the manufacturer to get them perfect. I’d love to know more about their sensors, but I guess that info is lost to the ages. </div><div class=""><br class=""></div><div class="">I have spoken with Jeff from <a href="https://www.snyderphonics.com/" class="">https://www.snyderphonics.com/</a> about the Manta. That is a multi-layer PCB with all the electronics on the back and a milled wooden frame to isolate the LEDs, it costs a fortune to make. I have no idea how many he has to throw away but given that they costs him hundreds, I guess that’s a VERY hard choice. </div><div class=""><br class=""></div><div class="">Mark</div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Aug 5, 2022, at 9:41 PM, Mike Beauchamp <<a href="mailto:list@mikebeauchamp.com" class="">list@mikebeauchamp.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="">On 8/5/22 06:09, mark verbos wrote:<br class=""><blockquote type="cite" class="">We also did a touchplate keyboard that is matte black with white print and gold plating (like Instruo or Make Noise) and so far have rejected more than half of them.<br class="">Mark<br class=""></blockquote><br class="">Ouch, rejecting 50% hurts. This is good information, thanks Mark. I had a project in mind that was going to use matte black with white print for a user interface - if it ends up happening, it's nice to prepare for 50% being kept in a box forever labelled "do something with these" because I don't have the heart to throw them in the trash.<br class=""><br class=""><br class="">I wonder if Buchla had the same issue with the Marimba Lumina GOLD?<br class=""><br class=""><a href="https://collections.nmc.ca/objects/213/buchla-marimba-lumina" class="">https://collections.nmc.ca/objects/213/buchla-marimba-lumina</a><br class=""><br class="">That front panel is amazing.. was that a PCB? looks flawless, and a single piece?!<br class=""><br class=""><br class="">Mike<br class=""></div></div></blockquote></div><br class=""></div></body></html>