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Re: Global reprap distribution graph - 17 years ago

I think there are these great Google earth hacks that might support this ... don't know sufficient about it though. Joost

by Joost - General

Re: reprap.org issue? - 17 years ago

I use IE6 (PC @ work, not by choice ;-) and get an error stating "Internet Explorer can not open the page www.reprap. ... Operation Aborted" after which I get a "The page cannot be displayed" page. Could be IE that does this ... it loads the menu and header part of the page fine, but then this error occurs. Joost

by Joost - General

reprap.org issue? - 17 years ago

Hi, I seem to be getting an error when accessing the page (or any of the pages actually). Is this a server problem or just my pc screwing up?? Joost

by Joost - General

Re: Baking gears - 17 years ago

Yup, it is. But is was interesting from a learning curve perspective - and fun to try a very low-tech approach. But definitely not efficient considering the end results. Joost

by Joost - Reprappers

Baking gears - 17 years ago

In the quest for alternative engineering, and apparently having to much time this weekend, I have set myself the past few days to try to cast (or mould) some gears. I had bought a small gear for the Z belt (attached picture, the red one on the left), but it wasn't cheap and I only have 2 and need some more - 2 for the Z and 4 for the Y axis of Darwin/Richard. So I figured I needed to create some

by Joost - Reprappers

Re: repstrap with aluminum parts?? - 17 years ago

Hi Mike, I used some aluminium for my repstrap construction. The corner brackets are made out of hardwood, and that does now seem to work. Used some ordinary wood screws to fixate the horizontal rods. I made the Carriage out of 9mm birch multiplex with bronze/brass bearings from an old scanner. The idler bracket and motor bracket are made out of rectangular alumium tubes, 2mm thickness, measuri

by Joost - Reprappers

EZ Water? - 17 years ago

I have been trying to find a source for some CAPA but have not been able to find it yet. When I was at a modeling shop yesterday, they had something called EZ Water. It is normally used to create water effects on rail road models. It melts at approx. 70 C and is some sort of resin. I have tried to use it to create 2 couplings between the motors and axis, and that seems to work. But what I was won

by Joost - Reprappers

Re: Universal stripboard - update - 17 years ago

Hey Forest, I used Microsoft's Visio. Works well for this; I have unfortunately not been able to find a suitable open source program (yet) with which you can create diagrams (but if anyone knows one I'll "translate" the files). Joost

by Joost - Controllers

Re: Universal stripboard - update - 17 years ago

Well, it did take a bit longer then I planned, but here is the stripboard design. It seems a bit messy, and though I have double and triple checked it, it would be good if someone else confirms that this does not result in smoking PIC's or injuries. I have not build it yet, thus it is NOT TESTED The attached PDF file contains 2 pictures. One for drilling some holes to cut the strips on the strip

by Joost - Controllers

Re: Support material speculation - 17 years ago

When I was working for a company that manufactured hydraulic valves, we once had a rapid prototype made for a casting core. I do not know _how_ they manufactured this core, but do remember that it was all one type of plastic. What they did to create the support material, was using very small, thin (i.e. 0,5 mm) "spikes". They could easily be broken of, which left you with the actual part. When us

by Joost - Polymer Working Group

Question regarding the belts - 17 years ago

Hi all, I have a question regarding the belts being used in the Darwin design. I have been at a local model shop where they sell parts for remote controlled toys. They have a belt that normally is used for RC helicopters to drive the tail rotor, which has a different pitch (approx. 5-6mm) then the belt listed in the BOM. They also have matching (plastic) pulleys. Both are reasonably priced (4 eu

by Joost - Reprappers

Re: Progress on Richard - 17 years ago

Hi Chris, Thanks for the tip! Will definitely try that - as soon as I get my hands on some polymorph. Joost

by Joost - Darwin

Re: Progress on Richard - 17 years ago

Hey Nathan, You mentioned in a previous post the thing about the trapped nuts in the wooden corner brackets. As written, I had not done that - but will. Using the screws is not working very well; it is very difficult (i.e. impossible) to get the bottom frame aligned properly. When applying some force on the screws, they are basically pushed out of the wood or the wood splinters. It is too "britt

by Joost - Darwin

Re: Progress on Richard - 17 years ago

Offcourse you can copy it - this is "open source engineering", so you should! I have also looked at tubes (had som 12mm lying around, easier to saw than stainless steel, smaller sizes might be too bendy) but this would also mean deviation from the darwin design (different sizes) and thus recalculating a lot of the work that is done by Ed Sells, which could result in other issues. Bear in mind,

by Joost - Darwin

Re: Weekend progress - 17 years ago

Hey Nathan, No, I did not. What I did was: - cut approx. 33 mm high blocks from an approx. 44x44mm wood beam - drilled 4 8.5mm through holes for the vertical posts - drilled 2 8.5mm through holes for the horizontal rods - drilled 4 2mm through holes for tiny 3mm torx wood screws (blunted the tip) to constrain the vertical rods - drilled 1 2mm through hole in the center to constrain the horizont

by Joost - Reprappers

Weekend progress - 17 years ago

Hey all, Just wante to share my progress on a repstrapped Darwin. I have used (FSC approved) hard-wood to construct the corner brackets and the thing actually seems to fit together and not fall apart. Considering the accuracy of my tools and the wood, a bit of a surprise... hard wood seems to work, though there appear some cracks in some corners. Attached a picture of the device so far. Next ste

by Joost - Reprappers

Universal stripboard - 17 years ago

Hey all, Due to the lack of PCB making skills & materials I have set myself to making the Universal board on an ordinary stripboard (26 x 38 holes, 2,54 mm spacing). To make things easier (for me and others), I have drawn up a picture that wil fit one-on-one on this board , containing the holes to be drilled, components (and markings), text and additional wiring. Print it and stick it on the

by Joost - Controllers

Another reprapper - 17 years ago

Hello all, I stumbled on this site a few weeks ago and have since been reading most of the posts and almost all of the wiki on the reprap. Mostly fascinated by the (long term) potential and impact, and have convinced some of my friends to explore this reprap concept further. So we have decided to see if we can build a repstrapper. Personally, I have a background in mechanical engineering, knowl

by Joost - Reprappers