... i have similar problems, discussions, thoughts and workarounds for making 3D-Objects on my CNC-mill, but milling is much more common, older and therefore mature then reprapping. I have a fully capable 3D-CAD/CAM-program with my CNC-mill, but dependant of the object (or the source i received predefined ones) i'll go different ways: - for simpler 2D- and 3D-parts i'll work in the proprietary mby VDX - RepRap Host
... maybe it's only some digits after the decimal-comma, when you displace the object in AoI. As you have the same counts of vertices and faces, it should be the numerical value of the coordinates, what's different ... Viktorby VDX - RepRap Host
... expensive and not really practicable ... With pumping you loose much initial power, so your pumping energy has to be much higher then the output - a typical green laserpointer uses 500mW IR-diodes for an output of 1 to 3mW. For Q-switching and resonance-improving you need an extrmely accurate optical setup with positioning accuracies in fractions of the wavelength! So this types of lasersby VDX - Laser Cutter Working Group
... here is a sketch of the laser-plotter with a 5-Watt-CO2-laser (4) in a fixed position: What's not drawn are three small mirrors (two fixed and one at the moving bridge), which feed the beam until the optical head - the small tube (45) atached to the tool-head (8) with a last mirror and a Germanium- or ZnSe-lens inside. It's not so complicated, as the common 4-joint-arms, which normally feby VDX - Laser Cutter Working Group
... here - - and here (esp. the images at bottom): - - we made some images with a single mouse-camera-sensor for measuring the exact position and movement of the bot over a marked surface. I have the complete ct-bot with the source-code, the especial 'mouse-camera'-program and a second mouse-sensor-PCB, but it would be some work to extract the part from the source. Maybe someone is interestedby VDX - Controllers
... you have to change the boot-order in your bios - CD/DVD prior to HD ...by VDX - RepRap Host
... with the NIR-output of diodelasers (~800 to 1000nm) in respect to CO2-lasers (10600nm) the cutting/drilling-speed is more dependant from the material - e.g. black ABS is much more absorbing than anything else ... In my development of a plastic-foil-cutting laserplotter with a 5-Watt RF-CO2-laser i experimented with some materials (wood, paper, leather, plastic, ...) and managed to cut untilby VDX - Laser Cutter Working Group
Hi Andy, ... here my idea: Viktorby VDX - Let's design something! (I've got an idea ...)
... here - - are some thoughts about fabbing a simple solar thermogenerator with many Seebeck-elements and a temperature-gradient of 500by VDX - Let's design something! (I've got an idea ...)
Hi Andy, there are many 1K- and 2K-epoxies which are heat-cured. Most other reactions are heat-sensitive too, so you can speedup the hardening process of most mixtures or achieve fast air-hardening when heated aditionally. I salvaged an old toaster with two IR-glass-tubes instad of wire-heaters and want to try hardening paste, so i hope to dispend fluid pastes at room-temp and harden slice aftby VDX - Polymer Working Group
Hi Fernando, ... on Friday i finally managed to mix your 1st receipe - today is Sunday night, but the Benzil didn't solve, so i think it wouldn't mix properly with the silicone. Have you a hint what's best to make the mix solve completely? Viktorby VDX - Polymer Working Group
... replacements and toys for my children, some parts and 3D-objects/fittings for my electronics and experimenting with paste-dispensing for prototyping in microtech-sensors and housings ... Viktorby VDX - General
... main problem could be clogging of the valve with material in the feeding - you need much force to pierce a needle through a plastic-filled hole ... For a simple valve-mechanic you can use a heated nitinol-wire as actuator against a strong spring. It's the simplest method for applying high forces when you can drive the current. Viktorby VDX - Mechanics
Forrest Higgs Wrote: ------------------------------------------------------- > Sounds interesting! Are you going to have a go at > it? yes, i want to make some experiments with layered fabbing with lasercutted plastic- and paper-sheets in plane and on cylindrical surfaces and this kind of designing would help a lot. But actually i didn't have much time for this - today i finally manageby VDX - RepRap Host
Hi Forrest, Forrest Higgs Wrote: ------------------------------------------------------- > ... > Is there a question here? ... it was a kind of brainstorming with an alternative construction-strategy that would be similar to the fabrication and maybe meet better the reprap way? - Instead of thinking and assembling in the common way, where you construct a box in the size of your desiredby VDX - RepRap Host
Hi Forrest, what's with the free MLCad ( ) from Michael Lachmann? He developed it for building LEGO-models, but you can make your own parts and macros and it's exporting into other 3D-formats and the BOM too. As Lego-models are built (brick- and) sheetwise, this could be an interesting variant for designing and fabbing ... Viktorby VDX - RepRap Host
... i've built laser-plotters in past, a laser-welding system recently and have a pigtailed 1-W-diodelaser waiting for work, so there is some experience already there - see and My first runs were with a 3-Watt and two 5-Watt-CO2-lasers where i used to cut plastic-sheets, paper and leather until 3mm thickness - it did work, but the fuming is highly acidic, poisonous and heavy carcinogene!!! Wby VDX - Laser Cutter Working Group
... here - and in the folowing posts we disputetd some issues of feeding with belts and wires. For a sample of driving a laser-plotter with steel-wires look at the atached images in this post - In this laser-plotter i used a stationary RF-CO2-Laser and moving mirrors/focus-head for cutting thin plastic-sheets and could sense some resonancies with steppermotor-driving in fullstep-mode, but haby VDX - Mechanics
... if a couple of folk would make this, then the companies would very fast sense substantial losses in the support and launch their 'debuggby VDX - Controllers
... it's not easy to find a paint, which stick perfectly to the copper without breaking out around the carved traces. Maybe it's easier to use normal PCB's with the photosensitive coating and simply carve the coating instead of UV-curing? Viktorby VDX - General
... i've got OpenCascade working on WinXP. Most of the executables are samples and demonstration of the capabilities, drawing/constructing seems to be a shell-based task with a lot of keywords to learn So next is to find some CAD-GUI's - the comercials are in the range of 500 Euros upward ... Viktorby VDX - RepRap Host
... with this in mind i tried LOM-fabbing - . I want to combine a reprap- and a mill-head for better surface-finishing and extending the possibilities of milling too. The software will be tricky, but this could bring a practicable solution for dealing with overhangs ... Viktorby VDX - Plastic Extruder Working Group
Hi Leav, ... thanks for the hints! I'm downloading open Cascade too and will try the next days and give then some feedback eventually ... Viktorby VDX - RepRap Host
... hier noch ein paar interessante Adressen fby VDX - Altes Forum
Hi Max, ... ja, beim RN-Motor war ich auch schonmal - hat aber nur 2 Motorausgby VDX - Altes Forum
Hi Max, ... meistens reicht es die Masse- und die Einganspins fby VDX - Altes Forum
Hi Tuchs, ... eventuell findest du hier - - noch ein paar hilfreiche Infos (den Posts und den Links folgen) Ansonsten wby VDX - Altes Forum
Hi Tuchs, ... evtl. hast du hier - - noch ein paar Infos mehr. Zum Loslaufen benby VDX - Schwarzes Brett
Hi sid, erstmal herzlich willkommen! Meiner Einschby VDX - Schwarzes Brett