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Java - everyone loves it and it works well everywhere. Maybe.
Re: Pinch wheel extruder -> Art of Illusion help! - 15 years ago
> Maybe it is down to plug in combination / > versions. Did Adrian use your CSG evaluator to > model the pinch wheel extruder? Would that affect > the saved AOI in a way that makes it only work if > you have your plugin when loading it? We dont store any additional plugin information in the aoi file.however after investigating this yesterday we found that we dont center the objectby wizard23 - RepRap Host
Re: Skeinforge Powwow - 15 years ago
hi enrique! Today I tested the support material functinality A little more. I wanted to print a hollow sphere: It worked almost perfect. It generated support structures on the bottom and on the inside of the sphere BUT it also generated support structures on top of the sphere too! I attached the stl and my settings and also the sliced gcode as a zip file. maybe you can find out what causesby wizard23 - Skeinforge
Re: Skeinforge Powwow - 15 years ago
cool work on the support structures! I just posted a few pictures of a part with support structures: (sorry the flickr importer messed up the order of the pictures) It would really be useful to set the PWM rate separately for the different kinds of layers - especially support. It was very hard to remove the material from the object.but i know that if you print with a too low extrusion rate theby wizard23 - Skeinforge
Re: Metalab movie - 16 years ago
BDolge Wrote: ------------------------------------------------------- > Here is a movie from the German hacker space > Metalab actually Metalab is in Vienna, Austria not Germanyby wizard23 - General
Re: How to get extrusions to stick well? - 16 years ago
Enrique Wrote: ------------------------------------------------------- > Hi Wizard23, > > Is your heated plate hotter in the center than the > edges and if so has that been a problem? i think so. Although it's hard to measure this accurately. we baught one of the laser temperature measuring devices but it doesn't give good readings on shiny copper. > If it is a problem, you coulby wizard23 - Mechanics
Re: How to get extrusions to stick well? - 16 years ago
Well for now I have a circuit that I can controll the heated bead with. We want to keep it as much "standard-reprap-parts" as possible. So for this it's not needed. For other things or for people who want to try out the heated base plate as it is it might be usefull. Might also be usefull for our planned plastic recycler - which would basically be a modded old school meat grinder with lots of niby wizard23 - Mechanics
Re: How to get extrusions to stick well? - 16 years ago
nophead Wrote: ------------------------------------------------------- > To fix the resistance you could just attach a wire > to the centre and link the other two connections > to get 9R. > > > Edit: > On second thoughts that would of course give 4.5R, > doh. Yes it would be 4.5ohm. Still this could at least be driven with the PWM board (althogh the transistor would neeby wizard23 - Mechanics
Re: How to get extrusions to stick well? - 16 years ago
Wade Wrote: ------------------------------------------------------- > Now that is a cool idea! Please post the details > on your new PCB - I'll be etching one myself very > shortly! If you are interested in the pcb: I made some python scripts that generate the serpentines as a kicad .brd file. The rest (adding some more traces and vias for mounting i did in kicad). the python scripts aby wizard23 - Mechanics
Re: How to get extrusions to stick well? - 16 years ago
A headed base plate worked well for us. First we used some nicrome wire between two epoxy plates that are bare epoxy on the inner side (so it does not short circuit the nichrome wire) and a thin layer of copper on the other side (we used this for etching pcbs normally). We print onto the copper side. It does not stick very well but at temperatures of about 100C or so it sticks well enough for aby wizard23 - Mechanics
Re: UHMW instead of PTFE - 16 years ago
Enrique Wrote: ------------------------------------------------------- > The metalab group used PEEK for the thermal > insulator and it worked great. I believe the peek > was glass filled, but I'm not sure. You can see > their descriptions of the insulator at: > No in the end we decided to try normal PEEK (even withouth the glass it's already way harder than PTFE). This workedby wizard23 - Mechanics
Re: PTFE vs PEEK - 16 years ago
We tried this out. At first I was a little worried about the glass transition thing but after reading up on wikipedia i found out that this is not the melting point...although the article left me rather confused. Anyway...I ordered a 20mm PEEK rod from RS components. here is the link to the product that has a link to the data sheet for this variant of PEEK: According to this data sheet is has:by wizard23 - Mechanics
Re: Half bearings for the extruder drive screw - How do they work? - 16 years ago
sid Wrote: ------------------------------------------------------- > Sorry, maybe this is going to be a dumb question, > but maybe not > > ptfe is known to have a very low friction, > > isn't it possible to machine the halfbearing from > the same piece of rod we use for the extruder > insulation? Well I tried something like this. I drilled a hole and then cut the shapeby wizard23 - Mechanics
Re: Metalab - 16 years ago
Kyle Corbitt Wrote: ------------------------------------------------------- > I saw that. This is exciting, particularly > because as far as I can tell their print strategy > is "print at 220by wizard23 - Reprappers