Thanks for telling me they have arrived safely. If there are any issuess please give us a shout. regards Stephenby stephen george - Vitamin Kit for Sale
Hi Thomas RJ11 and RJ45 cables have a different amount of wires in the cable. So generally no you cannot mix and match them. Generally. RJ45 is used for networking RJ11 is used for telephones Makerbots electronics have used the RJ45 for it's own ends outside of the ususal networking area. In their later designs they dropped this idea. regards Stephenby stephen george - Controllers
Hi I have bought some heater wire for the Reprap or Makerbot. Happy to share. 2 foot of 31 AWG Nichrome 80 double glass silicon is $A5 (enough for two wraps) Postage in Australia is free. If you are interested please leave a private email on this forum of send me an email to parts@stephengeorge.by stephen george - Vitamin Kit for Sale
Hi nudel. Thanks for the tip. regards Stephenby stephen george - Vitamin Kit for Sale
Hi I am providing a complete set of belts "pre cut" to work with the Mendel. No razor, No cutting just put the belts on and start using them. (So you won't need one of those nasty razor blade belt splitters ) Note: I have NOT spliced the Z belt or cut "down" the belts to the correct width as they come from the factory with the correct width. All you need for 1 Mendel "belt kit" is $35 + P&aby stephen george - Vitamin Kit for Sale
Nudel You said > Hmm.. well. I can make my own gears, but I don't know how well the thermoplastic holds up in the long run compared to a printed gear? I have perspect gears from the bit from bytes kit and have had no issues. It just works. I have been repraping for a few years now. That said I do have metal gears on order which I will be using for my next project. - Grin you said >I'llby stephen george - Vitamin Kit for Sale
Hi Cefiar You said: Nudel: Just a note that I've got some T5 belts on order with Stephen, and I'll post pics as soon as they come in if Stephen doesn't get around to it. Thanks - I appreciate that.by stephen george - Vitamin Kit for Sale
Hi Nudel Happy to supply whatever belt you want. Just don't want to disappoint you. 5M is $A25 plus postage and packaging of $A14 making a total of $A39. I can send them tomorrow if you are still interested. You said >Since I'm casting my own gears, I don't see why it shouldn't be possible to use a T2.5 - or for that matter any - belt? Or am I missing something basic here? You are not miby stephen george - Vitamin Kit for Sale
Hi Peter Note: T2.5 is for the Darwin not the Mendel. However I have Mendel belts on order and hope to get delivery soon. I should be getting them in by the 22nd May 2010. Delivery to Norway is about $A14 ($A11 postage + $A3 packing) (http://auspost.com.au/apps/international-parcel.html) If you send me a private email I will notify you of the cost and various options when they arrive. regaby stephen george - Vitamin Kit for Sale
Hi I have bulk bought T2.5 timing belt from China and happy to share with anyone in Australia. (because I am fed up paying $70 for 3m) Price is 5 Meter for $25 Australian Dolars plus postage and packaging (i.e. Whatever Autralia post charge me. I am in Brisbane.) Anyone interested? Please send me a private message if you are. Picture attached. regards Stephen Edited: 11th May 2010 changby stephen george - Vitamin Kit for Sale
Hi Got fed up paying $35 per Meter unit price for timing belt from Melbourne. Bought 100M from China. Happy to share at 5 Australian dollas per Meter + postage and packaging at whatever Australian mail charge. Alternatively can meet up in Brisbane CBD on most week days at lunch time. Timing belt has a pitch of 2.5mm and is 6mm wide. Which is the same spec as the bit from bytes V2 kit. I haby stephen george - Australia, Brisbane RepRap User Group
WADE said Since you aren't selling plastic Mendel parts, wouldn't this post fit better in the "Vitamins" forum? I say opps sorry. hmm how do I move this? WADE said Also, can anyone print 2.5 mm pullies yet? I thought 5 was the limit for reliability. I say Interesting. I have been using the pullies that came in the Bit from Bytes V2 set. T2.5 timing belt also came with the kit. Hense me sourciby stephen george - Vitamin Kit for Sale
Hi Going to bulk buy some T2.5 timing belt from China. (because I am fed up paying $70 for 3m) If this comes through I will resell 5M for $25 Australian Dollars. Plus postage and packaging (i.e. Whatever Australia post charge me.) Anyone interested? regards Stephen P.s At the moment 1USD$ is about 0.92 Aus$ edited May 11th 2010: Adjusted 5 Meters price - Sorryby stephen george - Vitamin Kit for Sale
Hi Mario Not actively working on this project at the moment as I am modifying the design of my MDF reprap. If you are intersted in kick starting this project off I am happy to match any hours you put into it on a weekly basis. Can you code in C? Stephenby stephen george - STEP-NC
Nice. However I found my very large CPU heat sink (I ama afraid much bigger than yours) was not enough and had to attach a fan as well. CPU fans are a good way to go. If you don't want to go down the route of a fan a stepper I have seen people use a computer case to house the electronics and a single large fan (which is usually the same cost as a little fan) to keep everything cool. Good luckby stephen george - Controllers
BalanceSeeker said what about measuring the acceleration of the extruder head, i.e. the force exerted on the extruder head. It seems to me that the amount of extrusion leaving the head should somehow be related to the re-action force, as per Newton 3 I say This is exactly what adrian is working on with his 5D Gcode. The head acceleration is a function of the stepper motor and is controlled by thby stephen george - Reprappers
mccoyn () said Why can't you use a random (or changing) starting position for each build. I say Thanks. I did think about that and it would work with smaller objects but what about larger objects that take up the whole print bed? Also I want the reprap to start putting objects out 24x7 so cooling the print bed is an issue. I have solved the issue. I removed the 4.5mm Acrylic and switch to aby stephen george - General
PLA is $USD 80 from makerbot + postage. But thanks for the tip.by stephen george - General
Nop head said Irrespective of material and nozzle opening I always use a nozzle height of 0.8mm times the notional filament diameter. The diameter is set by the flow rate and the head speed. I am currently extruding 0.375mm filament through a 0.4mm nozzle with a layer height of 0.3mm giving a filament width of 0.45mm. I said Interesting. My extruder is usually 0.1mm - 0.2mm off the print bed tby stephen george - Reprappers
Environmental impact of the reprap Generally it is very positive. As we are making parts locally we do not need to burn fuel to bring the product from China and therefore do not need to build the trucks, ships, trains, roads and rail tracks which therefore reduces pollution and the chance of accidents which cause oils spills etc. Hopefully the reprap will make the 5,000 mile part a thing of theby stephen george - General
That bit of metal wire looks a hell of a lot like the middle of my clothes pegs that I use to dry my clothes with. I wonder if it could be adapted? regards Stephenby stephen george - General
There I was rocking along. I was smoking hot. Part after part was coming out of the system. Skeinforge was generating the code while my scripts sucked up the latest gcode and added it to the queue. The music was pumping and the wine was flowing. Then disaster. Putting 240C ABS on the printing bed in the same general place time after time had raised the temperature of the print bed. Who would haby stephen george - General
The 1.2 and 1.1 steppers are great as long as you have active cooling on them. I basically choped up some old CPU heat sinks and added fans. You might want to consider using the enable line to switch the motors off while not inuse. This helps keep everything cool. Note Switching the enable lines off and on while printing ie switch the Z off while the x and y are working causes in accuracies inby stephen george - Controllers
Hi fellow brisbanites reprapers Live in Brisbane. Did have a working reprap 2 days ago. But destroyed extruder. Should be back and running soon. I use Gen 2 electronics and skeinforge and a modified reprap bios. Stephenby stephen george - Australia, Brisbane RepRap User Group
aka siad Micro stepping gives increased resolution at the expense of accuracy and repeatability. Often due to simple stiction you will be missing micro steps anyway and the spacing of the steps will not be what you think you are getting. My reply. Is this really true? I appreciate that an 1/8th micro step might not be exactly an 1/8th of a step in degrees turned and so I can understand you thinby stephen george - Controllers
Hi Luis My money is on the arduino Mega which to my understanding is more powerful than the Sanguino. Also have you tried the new rewritten firmware in the experimental section? regards Stephenby stephen george - RepRap Host
Well I don't know if it looks nice as there is no pretty perspex or steel but it seems to be working well. I think it could be a CNC as well with the proper upgrade as it is very stable. In which case it could become a reprap rather than a repstap as it will be able to shape MDF and produce most of its own bits. Stephenby stephen george - General
Thanks goinreverse () for the praise. Looking to do a complete write up once I have ironed out a few issues. I.e. test the less bearings idea out. I plan to have a bearing less Z axis. That should knock the price down a bit. >Also have you actually succeeded in printing some of the trickier mendel parts like the extruder carriage and other motor carriages? My reply Haven't tried yet. I willby stephen george - General
Hi I have finally built my second repstrap. It’s features are 1) Low cost. Uses screws instead of nuts and bolts and MDF not plastic and steel. 2) Bearing count 23. But I recon I can get it down to 12. 3) 8 threaded rods+2 unthreaded rods but it can be reduced to 5 + 2 unthreaded 4) 300 x 400 Z axis build area. With a Z axis of 250mm 5) Prints well at 25m/s with a Makerbot MK4 extruder. 6) Haby stephen george - General