Show all posts by user
Self-replicating Fab Lab -> http://objects.reprap.org/wiki/RepLab
Re: Categories and sub categories - 13 years ago
No one has. It took me a while to learn that there is no "RepRap project" but just a lot of people each building and improving their own printers and from time to time looking left and right to whatch the others are doing. Most of the talking you find is just general small talk and wild ideas instead of focused issue solving in a group where everyone has their own expertise and findings are gatheby MarcusWolschon - Administration, Announcements, Policy
Re: Categories and sub categories - 13 years ago
Good that you are volunteering! i wish you good luck to get this done. Especially the "would need disscusion" - part.by MarcusWolschon - Administration, Announcements, Policy
Re: Autodesk 123D beta update - 13 years ago
Thanks for the info!by MarcusWolschon - 3D Design tools
Re: what is the best extruder and hotend for repstrap - 13 years ago
karandex Wrote: ------------------------------------------------------- > what is best hot end for wade? i have lathe so > please give design which is better on lathe What is your metric to define "best" and what are the limitations to exclude designs from the comparison? Some prefer hot-ends that they can also get pre-fabricated, some people fine it easier to work with fire cement, otherby MarcusWolschon - Plastic Extruder Working Group
Re: Categories and sub categories - 13 years ago
So you basically haven't noticed that dozens of categories already exist in the Reprap-wiki and that you are free to create your own ...by MarcusWolschon - Administration, Announcements, Policy
Re: designing a new extruder - 13 years ago
jcabrer Wrote: ------------------------------------------------------- > Instead of relying on springs, there should be a > printable spring apparatus to perform the same > function. What would be the advantage? (I'm not aiming at a maximum percentage of printed parts.) I don't think a) 3 people printing the same spring on 3 printers with 3 brands of ABS will get anywhere near similarby MarcusWolschon - Plastic Extruder Working Group
designing a new extruder - 13 years ago
I'm currently designing a new extruder that combines the best design-details that have emerged since Wade's. * It will gear down the stepper like Wade's does. * Use herringbone-gears to reduce backlash and noise like some others I found. * Use a spring-loaded lever to make filament changing and adjustments of pressure easy and keep the pressure constant as the nut does not loosen after a while.by MarcusWolschon - Plastic Extruder Working Group
Re: Camera shoulder rig for DSLR - 13 years ago
tharsis Wrote: ------------------------------------------------------- > Did you resolve the bolts through the bars issue? Not with ABS. It can probably be resolved with a hinge.by MarcusWolschon - Let's design something! (I've got an idea ...)
Re: Camera shoulder rig for DSLR - 13 years ago
The shoulder mount works great, however it's quite large to transport.by MarcusWolschon - Let's design something! (I've got an idea ...)
what is the most recent geared down extruder? - 13 years ago
Does anyone have an overview, what the most recent geared down extruder is? Something that grips the filament from both sides and uses a spring-loaded tensioning. (I'd modify it to support the rotary encoder on an idler to get feedback that filament is actually being pulled in instead of feedback that the stepper is turning myself.) Marcusby MarcusWolschon - Plastic Extruder Working Group
anyone using skeinforge for milling? - 13 years ago
Is anyone here actually using Skeinforge for milling or any other profiles then extrusion?by MarcusWolschon - Skeinforge
Sources for extruded aluminum profiles - 13 years ago
Who knows good sources for extruded aluminum profiles and associated linear bearings, trapezoidal spindles,... in EUROPE? (Germany would be best) In the small volumes required to build a single machine.by MarcusWolschon - Extruded Aluminum Frames
Re: PCB Milling - 13 years ago
It is done! And even 2 weeks ahead of time for the GPN in Karlsruhe. design files: video: I kind of rushed this, so I may upload an updated video next week or so. More details on using vIsolate, mention the new leveling-feature on the PCB-vice platform, maybe write some software to do the drilling too (Have to find out how this drl file-format of Gerber works first), using other software toby MarcusWolschon - Look what I made!
Re: dual and tripple extruder - 13 years ago
Andrew Diehl Wrote: ------------------------------------------------------- > Technically speaking, skeinforge supports dual > extruders through the start and end support > alteration files. Getting a firmware that does it > is another issue. With a RepMan with motherboard 3.3 this is not an issue since it's made to support 1-3 toolheads that may or may not be extruders (type of toolby MarcusWolschon - Skeinforge
Re: Unified tool head grip - 13 years ago
VDX Wrote: ------------------------------------------------------- > ... there are many different methods around for > fixing toolheads - a complete extruder is one of > the hardest to solve problems ... but there are > pen-holders, dispensers and laser-heads too, > what's not so heavy and/or big. Indeed. That's why the mounting must be designed with the most extreme toolheads inby MarcusWolschon - RepLab Working Group
dual and tripple extruder - 13 years ago
Has any work been done to support dual and tripple extruders yet? I'm only aware of BitsFromBytes Axon supporting them (with Skeinforge somehow as a backend. Maybe postprocessed somehow) and some scripts atby MarcusWolschon - Skeinforge
Re: Unified tool head grip - 13 years ago
VDX Wrote: ------------------------------------------------------- > ... but you can apply the cone idea for > reprap-toolheads too when printing with 'light' > infill - so the connecting parts will have a solid > shell and a leightweight body. That's just the weight. A cone the size of a toolhead, strong enough to carry a NEMA23 stepper that is not in the center and a hot-end wouldby MarcusWolschon - RepLab Working Group
Re: Unified tool head grip - 13 years ago
I see. These large and heavy mounts for industry milling machines with a pneumatic toolhead-grip. Well...I don't think they are practical for us. (They are as large as some of the machines here and weight as much as a fully assembled RepMan.) They are hoewever very good for automatic tool-changers. Maybe apply 2 cones on the sides of a more conventional mount to automatically aligh the toolheadby MarcusWolschon - RepLab Working Group
Re: Unified tool head grip - 13 years ago
VDX Wrote: ------------------------------------------------------- > ... cones with a notch and fixing screws are > commonly used - all other 'typical' fittings i > know are special designed and IP'ed for specific > brands ... Used for what? If the toolhead-mount is a cone, where would the tool stick out?by MarcusWolschon - RepLab Working Group
Re: Unified tool head grip - 13 years ago
(My proposal would be the circular mounting used in the RepMan as it's stable enough even for milling and very simple.)by MarcusWolschon - RepLab Working Group
Re: Unified tool head grip - 13 years ago
So..... does anyone have an idea for the mechanical side of a good universal toolhead-mounting? One that is stable in all 3 axis against backlash, can support heavy toolheds, fits into the frame of a RepMan, Mendel, Ting-o-Matic and Mini-Mendel?by MarcusWolschon - RepLab Working Group
Re: Camera shoulder rig for DSLR - 13 years ago
I added a geared follow focus to the collection of 15mm DSLR rig parts It uses an industry standard 0.8 pitch and I tested it to be compatible with commercial gear. (Use these lens gears on a commercial system or lenses with commercial lens gears in this follow focus.)by MarcusWolschon - Let's design something! (I've got an idea ...)
Re: PCB Milling - 13 years ago
VDX Wrote: ------------------------------------------------------- > Hi Markus, > > i made a really stable milling head with 3 > bearings, what's only applicable if you have a > lathe ... applied a simplified sketch (without > internal fixature) > Interesting. I'll stay with my Dremel flex shaft for the time being. I simply don't have a lathe and no experience with metal-wby MarcusWolschon - Look what I made!
Re: PCB Milling - 13 years ago
Traumflug Wrote: ------------------------------------------------------- > Marcus, > > I tried with a flex shaft as well, but the mill > bit can be moved in and out of the shaft by almost > a millimeter, along the shaft axis. Is your flex > shaft better in this regard or did you find a way > to deal with this play? I did not notice such an issue when doing this on the Repmby MarcusWolschon - Look what I made!
Re: Digital micrometer for positioning - 13 years ago
martinprice2004 Wrote: ------------------------------------------------------- > Digital Calipers are often used as linear encoders > on machine tools see the following image .... Well. that's all manual machines where an operator can read the value with his eyes. Last time I checked a RepRap didn't have eyes. 3x a second means that even at slow 32mm/s you have already moved 10.67mm betwby MarcusWolschon - General
Re: Digital micrometer for positioning - 13 years ago
A more usual way to do this is to add linear or rotary-encoders to the axis. The result is stepper-motors operated as servo-motors to reach abolute positions while detecting and countering missed stepps.by MarcusWolschon - General
PCB Milling - 13 years ago
Early prototype... Expect results, design-files, technical drawings and instructional video in 1-2 weeks. I plan to have PCB milling working (including the software for optimized routing) on GPN at the latest. Software will be VIsolate (optimized Voronoi-routing for milling). I already adapted it to PCB milling on the Repman quite a while ago and it should be easy to get it to work on the Thiby MarcusWolschon - Look what I made!
Re: overview of categories? How to find designs? - 13 years ago
There is no link "Development", only "Developmet Index". Noone wold follow that link unless they are looking for the development methlogy, history, source-files, version-control, ... of the Reprap-printers themself. Noone looking for parts that are not a reprap-printer would ever go there. Consequently you don't see any designs that are not parts or or for a Reprap in the category:development orby MarcusWolschon - Administration, Announcements, Policy
Re: Autodesk 123D free maker design program. - 13 years ago
Hello blitz3dservice ...what exactly are you trying to say by quoting that advertisement? blitz3dservice Wrote: ------------------------------------------------------- > Autodesk 123D is a free Windows desktop 3D > modeling application that can be used by students, > hobbyists and entrepreneurs alike.With Autodesk > 123D, anyone can explore, learn and create highly > precise 3Dby MarcusWolschon - 3D Design tools