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p.s. RepRap.org isn't responsible for scams and bad deals.
Re: Power supply - 13 years ago
> You need about 15 volts to drive the heatbed on a Prusa. To be more precise, you may need 15V to drive the heat bed. It rather depends on the manufacturing details of the bed you're using (the resistance varies between batches of beds), what temperature you're aiming for, and how cold the room is. We've found that our (RepRap Kit) beds work best with around 15V. I hope this helps.by leo.dearden - Southampton RepRap User Group
Re: Stepstick alternative. - 14 years ago
Is there any reason why the A3979 carrier is unsatisfactory? It would appear to be a valid stepstick alternative.by leo.dearden - Controllers
Re: Issues printing widening concentric circles - 14 years ago
Hi Quentin, If you provide more details it will help us to help you. What slic3r settings are you using (especially layer hight, speed, bed temp)? I suggest the following: 1. Calibrate your extruder feed rate. A good intro/instruction is here: 2. Make sure your filament diameter setting in Slic3r is correct. I use digital calipers to measure mine (I got a pair that has served me well for yeaby leo.dearden - Reprappers
Re: Sub £250 3D printer - 14 years ago
Good project. Best of luck. The Electronics will be the most expensive part. The Printrboard from the Printrbot might be a good low cost choice. Alternatively, you could home fab a Gen7, but it might not work out cheaper. After that, the motors, linear bearings, and hot end are all expensive. It's probably worth paying for linear bearings, but if you can't afford them (try ebay), then try feltby leo.dearden - Reprappers
Re: Please help...Blobbing vs Stringing and tempature vs retract settings. - 14 years ago
It looks like your extruder filament drive is direct mounted. If that's correct then the "not more than 2mm" rule is probably good. (If it's on a Bowden cable then the springiness of the long tube and the filament in the tube means that you can probably retract 3-4mm before you get air sucked back up. This is what I found with my Ultimaker.) I run a retract speed of 30-40mm/s on my Prusa Mendeby leo.dearden - General
Re: RepRapKit.com - 14 years ago
@yydoctt Reviews come from whichever of our customers feel like writing something :-) It would be great to have reviews from established members of the community. However, the community is growing exponentially and most buyers of RepRap kits are just starting out, so most of our potential reviewers don't have much history. Everyone with something to say, good or bad, is most welcome. Obviouslby leo.dearden - General
Re: ABS on Glass with abs juice - 14 years ago
@gtg252b I've found a few solutions to the (few) problems I've had with ABS not sticking to heated Kapton: Make sure your Z-stop calibration is correct. Parts that are squashed harder to the bed stick better. Raise the bed temperature. It's not too hot unless your print is not solidifying. Raise the extruder temperature. It's not too hot unless your print is not solidifying, or you get smoke frby leo.dearden - Reprappers
Re: My Prusa build - Trials and Tribulations - 14 years ago
@iLikeWaffles You asked about the double Z header on the RAMPS 1.4. The header is wired with the two motors in parallel. I've concluded that you get better performance by wiring your Z motors in series. You're better off doing the series wiring yourself and using one header. I've tried it both ways, and series does work better with high current motors (which are common). Here's why: The moby leo.dearden - Reprappers
Re: My Prusa build - Trials and Tribulations - 14 years ago
@nophead You asked: Why 10mm? I used the data from transdev.co.uk to model worst case* stretch for a Mendel style printer, and concluded that: - Belt stretch can be enough to matter: 0.36mm in 5mm wide glass fibre and rubber HTD3. - 10mm wide steel and polyurethane AT5 is ~1/3 as stretchy (~0.12mm). I could have got another factor of 2 by going to 16mm wide ATL5, but that is less flexible sby leo.dearden - Reprappers
Re: RepRapKit.com - 14 years ago
This thread is intended as a place for customers to post their experiences with RepRap Kit, and I'm sorry if we didn't give that enough emphasis in the OP. It's here because that's where many of the other supplier review threads are (taken from reprap.org: http://forums.reprap.org/read.php?1,60035,98512#msg-98512/, http://forums.reprap.org/read.php?1,102156/, http://forums.reprap.org/read.php?1,by leo.dearden - General
Re: New product: Mendel bearings for sale 
- 16 years ago
The kit is now expanded to include 3 extra bearings so that you can build a geared extruder. 51 of 624ZZ 2 of 608ZZby leo.dearden - For Sale
New product: Mendel bearings for sale :-) - 16 years ago
Bearings are now for sale (GBP 18.95 for a full set for Mendel).by leo.dearden - For Sale
Re: Mendel webshop online www.mendelparts.com 
- 16 years ago
Very keen prices! I'm impressed. Perhaps we can work together on some things? All the best,by leo.dearden - For Sale
[UK] new webshop for RepRap parts open at RepRapKit
.com - 16 years ago
http://RepRapKit.com (does what it says on the tin). At the moment, I have ABS feedstock for sale, from GBP 12.99/kg. I'll be offering a full range of Mendel parts, starting with extruders, as I get things set up. I'm based in the UK and will ship worldwide. Questions, comments, and suggestions are welcome as comments on the site or to leo@RepRap&by leo.dearden - For Sale
Re: abs wire supply - 16 years ago
Just FYI, I've just taken delivery of 150kg of ABS from China. See this thread. The process went OK. It would have taken a couple of months to set up if I'd been in a hurry and the tolerances aren't that tight, but I think the filament is perfectl usable. EXW price was $3.09/kg, and shipping to Switzerland DDU was $5.20/kg. Cheers, Leoby leo.dearden - Reprappers
Re: It's here! - 16 years ago
I didn't realise that my email was hidden. You can always send me a PM. Or email me at: leo dot dearden at G mail dot com. Anyway the deadline for saying/confirming that you want some is now past. Daniel has had 40kg, Marcus gets 10kg, khiraly gets 50kg, and I keep the last 50kg. If there's further demand someone else can do another order. I dealt with: Shen Zhen Yarui International Forwardby leo.dearden - For Sale
It's here! - 16 years ago
It's at my house in Langnau am Albis in Switzerland. You can have it for CHF13/kg + delivery at cost. (approx EUR 8, USD 12, GBP 7 /kg + delivery). Email me to confirm how much you want. Priority to people on the thread. Then others first come first served. Only 70kg available. I'll send out on the 15th. If I can't serve you from this shipment, and there's still enough demand I'll give the optiby leo.dearden - For Sale
Re: (Very cheap) ABS, probably from china - 16 years ago
Hello all, Sorry for the silence. The order has been slow to arrange. 150kg should be delivered some time in the next month. I can fill all the orders expressed on this thread, except khiraly, who will get what's spare if he wants it. I'll post a final price as soon as I know it. Thanks for your patience. Cheers, Leoby leo.dearden - For Sale
Re: Printing PCBs - 16 years ago
On the other hand, direct application of resist may produce good results, and I'm eager to see what you come up with. Cheers, Leoby leo.dearden - General
Re: Printing PCBs - 16 years ago
Quotejhoff Is there a particular advantage of using extruded plastic and solder over say, drawing or printing the circuit in ink, on a bare copper PCB and then using chemical to etch it? IMHO the most interesting circuits to fabricate require multilayer boards. These are seriously challenging to fabricate in a garage. To oversimplify: you have to etch, drill, electro-plate vias, bond, repeat, reby leo.dearden - General
Re: (Very cheap) ABS, probably from china - 17 years ago
I don't have a reprap either. I'm making an EMC2 controlled repstrap from a CNC router. I don't know how much ABS there is in an Darwin, either. I'd GUESS 0.5-2kg. Once my repstrap is running reliably, would you like me to print you some parts (assuming I get there first, of course)? Cheers, Leoby leo.dearden - For Sale
Re: Perhaps eBay - 17 years ago
Fair enough, up to a point, but some sorts of deal don't fit well on ebay. Take the bulk ABS order that I'm about to make. I don't want to speculate: buy a load and then hope to sell it (for profit or otherwise). I just want to make firm arrangements ahead of time with fellow reprappers and get us all some ABS as cheaply as possible. Leo.by leo.dearden - For Sale
Re: (Very cheap) ABS, probably from china - 17 years ago
A container is about 20 tons. Demand seems to be rather less than that. :-) I'm not going to order a container load until there are a lot more reprappers asking for it. Plan B: A small(er) shipment by air. Price is excellent: ~$9/kg delivered to me. I'm just about to ask two factories in China for samples. Once I've assessed the quality I'll order about 150kg. You can then either collect yourby leo.dearden - For Sale
Re: 5lb Coil of HDPE - 17 years ago
korndog Wrote: ------------------------------------------------------- > ...i > had a breakthrough with a granule extrude so I no > longer need it. That sounds exciting. I want one of those very much. Is your granule extruder documented anywhere? Or even some photos? Please tell us more. Cheers, Leoby leo.dearden - For Sale
(Very cheap) ABS, probably from china - 17 years ago
I'm looking to RepRap a number of large objects, so I'll soon be ordering at least 100kg of ABS welding rod. The best quote I have so far is EUR ~4/kg + EUR ~7/kg surface shipping to me in Zurich + insurance + duties (~10%?). This is pretty cheap, but if we can put together a bigger order we can probably get it much cheaper. I'm considering arranging the shipment and distribution of a containby leo.dearden - For Sale
Suppliers for parts - 17 years ago
SCphotog: > The whole point of the Reprap project is to create a rapid prototyping > machine that is cheap enough for the everyday inventor and enthusiast > to build. Sure some can afford to spend thousands on the parts they need > but IMHO that undermines the spirit of this project. With respect, the RepRap project is many things to many people. If commercial molded parts are tby leo.dearden - For Sale
Re: New cadidate for 3-D printing. - 17 years ago
I've been to a seminar about casting, which included a section about using Alginate to make molds from people. It can be made to set pretty fast (some seconds) in air by mixing it strong with warm water. What they told us was that it is short life (hours) and dimensionally unstable, because it's a water gel: A solid matrix filled with water. You can make it harder or softer by changing the propby leo.dearden - Plastic Extruder Working Group