... it looks, there are ten 270W-diodes with complete fibers, so pretty "good stuff" If the electronic is working, then check, if the external fiber ist cut - it could be spliced again with a new fiber, but this isn't so easy. If the external fiber is OK, but the electronics is broken, then you can remove the electronics and support the diodes with up t0 40Amps current (single or in series) -by VDX - Laser Cutter Working Group
Hi Reiner, ... du kannst ja mal mit ein paar Stücken ausprobieren, ob die sich wieder "regenerieren", wenn du sie in einer Kiste mit feuchter Luft ein paar Tage lagerst ... alternativ, sollte das Problem eher aufgenommene Feuchtigkeit sein, ggf. eine Stunde im Backofen bei 60°C oder in die Sonne legen ...by VDX - Extruder, Hotends & verschiedene Materialien
... das kann neben Wasser auch der "Austausch" (abgeben oder aufnehmen) von Lösemitteln o.Ä. sein - hab' in den Kellern auch einige "Veränderungen" an Materielien, die entweder aushärten bis "spröde" werden, oder auch z.B. "weicher" bis "verflüssigen"by VDX - Extruder, Hotends & verschiedene Materialien
... yes, I've did this some years ago for a company development (for pastedispensing and lasercutting) -- was not too easy, but doable ... it's a huge amount of coding in different classes to deactivate the 3D-printing functions and adding new ones Here a screenshot and some of the new "toolbox"-images: You can serach here in the RepRap-forum for "giecaps" -by VDX - Printrun/Pronterface
... even better and more usable than a fiberlaser (bur more expensive too) is an UV-DPSS-Laser. For a R&D-project I've ordered a 10Watt laser (had a 20W-type for a half a year for testing) and all the needed components - here an image of the temporary setup: It's meant mainly for microfabrication with graphite and some other "R&D"-stuff ... but is pretty good with wood tooby VDX - Laser Cutter Working Group
... für 3-phasige brauchst du spezielle Treiber, die deutlich teurer sind, als die für 2-phasige. "20Nm" scheint mit Getriebeübersetzung zu sein? - sonst sollten das eher Ncm sein ...by VDX - Elektrik & Elektronik
... yes, a friend milled it from solid aluminium: I have another bigger air cooler with 6x30W peltier-heat-exchangers to a housing of a broken and salvaged "small" fiberlaser (got only 9W and 25W laserdiodes from):by VDX - Laser Cutter Working Group
... I have CNC-milled watercooler-bricks under the housing and directly attached focussing lens with 50mm focal distance: For the fiber-ends -- simply by emitting more than 100Watts out of the fiber-end it started to burning if not perfect polished and/or a tiny bit of dust on the surface. But have hope, as I've ordered some better equipment and polishing mterials, so could maybe get the fibby VDX - Laser Cutter Working Group
... if you want some insights of my "tinkering", then you can find older images and hints here (was then with a similar 200W-diode) -by VDX - Laser Cutter Working Group
... with a 0,2mm fiber I've got only below 100 Watts through, then the fiber tip burnt up and emitted fumes - here you'll need perfect polishing and embedding in a cooled tube to get this working .. normally not available with DIY-measures. Why not fixing to the CNC? I've set this modules on a water-cooler, ready to fix on the Z-axis of the CNC-mill ...by VDX - Laser Cutter Working Group
... you can remove the fiber and drill a 15mm-bore instead - then open the housing and remove the internal focussing lens, so the collimated beam (around 4x4mm square) can escape ... then simply attach an extrnal focussing lens and you can get an even smaller focus diameter, than with a fiberby VDX - Laser Cutter Working Group
... ich habe einen Account bei Autodesk, kann das aber darüber nicht downladen, da ich keine Studenten- oder Ausbilder-Bescheinigung habe ... so könnte ich nur die eingeschränkten(?) Testversionen downladen ...by VDX - Software
... hmmm ... bin leider kein Student mehrby VDX - Software
... for paste-jetting I'm using the extruder-steps by recalculating the needed E-step number in the G-code according to the moved path, so it's a precise "pulses per mm" output. To change it into "ON/OFF" instead of pulsing, but still exactly "synchrone" to the G1-moves, I've used an external "retriggered monoflop" IC, where the timer circuit is triggered with every E-step and reset with the nexby VDX - Firmware - experimental, borrowed, and future
... account deactivated, posts preserved ...by VDX - Administration, Announcements, Policy
... look into half-bridge drivers, as used for steppers ...by VDX - Firmware - Marlin
... did some intermixing, but notized, that different additives have too different melting properties and/or will change colour regarding to end temperature or some "chemical interaction" with different additives around ... but it's a pretty interesting "alchemy" option, similar to emailles, changing colour while melting and after solidifying (or oxidizing). Was more interested in clearly separaby VDX - Let's design something! (I've got an idea ...)
... I have two big bottles full of powdered PA - one white (only with CO2-laser meltable), the other black (too with blue and NIR-diodes possible) ...by VDX - Let's design something! (I've got an idea ...)
... wenn du bei der Suche unten rechts "jeden Alters" auswählst, statt nur die letzten 30 Tage, dann wird dir hier auch geholfenby VDX - Allgemeines
... then maybe you have to redefine moving directions and switch positions (MIN/MAX).by VDX - Reprappers
... for clear resins either visual or IR/NIR LED's would be OK. You can use a "trick" for the flow detection too, with a bit space inside a housing or the outlet into the water-reservoir -- let the water flow through a free spacing, so the water jet will form a "bow" (or arc) and point with a focussed LED or laserpointer through this bow on a sensor on the other side. With flowing water the bowby VDX - Tech-Talk
... a homing macro ist enough - after execution this position ist stored after next G92 oder restart. You can define the virtual home-position in the configuration file too - then the firmware "knows" the offset-positions of the switches and sets 0-position after the G28 homing commando on its own.by VDX - Reprappers
... you can use G92 to set any desired position - with "G92 X0 Y0 Z0 E0" the actual position will be home with resetted extruder ... any other numbers will set to the specified position - so you can for example home at a corner/edge, but set the new home position to the center of bed ...by VDX - Reprappers
... printingwith ABS and then vapoursmoothing with Acetone maybe?by VDX - General
QuoteGoing to be interesting to see if 3d printed structures become more prevalent over the coming years. ... they are! -- several companies are already printing houses or complete villagesby VDX - General
... the belt is the "raising" axe, so with rotating the belt, the size/length in this axis is "limitless" -- so you can print as long parts as you wish or as you have space in this direction ...by VDX - General
Hi Mike, ... eventual of interest would be a "kraken-type" tubing structure with segmentet hoses (as used for CNC-coolant), where you can direct air-flow direct on special spots ... or too, attached to the print-head, if the printer can handle the aditional weight ...by VDX - General
... dann klatsch ich ihm den LSB-Schein um die Ohren und er sucht das Weite Ich beschäftige mich schon sein '90 mit Lasern - anfangs als Höbby, später auch immer wieder beruflich ... hab' auch Laseranlagen und -Applikationen entwickelt ... also schon etwas ernsthafterer Umgang mit der Materieby VDX - Laser-Ecke
... to avoid this behaviour with burning the lines ends, I'm using the extruder-stepper STEP-pulses for the laser - they are calculated precisely for "pulses per mm" instead of simply PWM, regardless, how fast or slow the movement is ...by VDX - Firmware - Marlin