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General discussions. For specific printers / electronics / fabrication methods / softwares, please see other sections.
Re: Metals4U in UK for 303 and 304 stainless steel round bar - 8 years ago
SS not bought that from them, but the brass I got off them a couple years ago was quality stuff.by DragonFire - General
Re: Custom CoreXY - -Linear Rail Vibration - 8 years ago
Quoteorea AFAIK they are all steel (a quick search gave your post as first result ) Anyhow, OP can chime in on this.. Let's put it this way - a lot of MGN12s are advertised as being made out of "metal". What metal you get... is totally out of the buyer's control, in such cases.by DragonFire - General
Re: My problem is your opportunity. - 8 years ago
Well spotted. Non Disclosure Agreement I, Pat McDonald currently resident in Nottingham, UK, and a citizen of that country, AKA "DragonFire" on the RepRap.org forum, promise not to disclose to any third party, information from the Reprap Poster known as "Digital Ghost" on the Reprap.org forum, any information whatsoever shared, to any third party, for as long I shall live, from this day forwarby DragonFire - General
Re: My problem is your opportunity. - 8 years ago
Non Disclosure Agreement I, Pat McDonald currently resident in Nottingham, UK, and a citizen of that country, AKA "DragonFire" on the RepRap.org forum, promise not to disclose to any third party, information from the Reprap Poster known as "Digital Ghost" on the Reprap.org forum, any information whatsoever shared, to any third party, for as long I shall live, from this day forward until the dayby DragonFire - General
Re: Nozzles sizes are getting finer... - 8 years ago
QuoteRlewisrlou666 0.04m Acupuncture Needle ROFLby DragonFire - General
Re: Nozzles sizes are getting finer... - 8 years ago
Don't see why it's a typo, 0.1mm are available in quantity... but to be honest, Chinese don't have great reputation for build quality.by DragonFire - General
Re: Failure in arduino/ramps damaged laptop - 8 years ago
USB port failure from plugging in damaged USB equipment is very common, sadly. Usually the computer (laptop or whatever) is usable afterwards, but it's a component level repair job to get the port operational again. Very often Mr Southbridge chip needs replacing. Trad serial ports always had opto isolators to prevent this happening, so one way of avoiding it is - use a real serial port, not USby DragonFire - General
Re: UK Hairspray - 8 years ago
QuoteRlewisrlou666 So what is in Hairspray that makes prints stick to it? Little miniature sticks. Hairspray manufacturers use a range of products. If you compare the ingredients of what the OP is currently using... "Alcohol, Butane, Isobutane, Propane, Octylacrylamide/Acrylates/Butylaminoethyl Methacrylate Copolymer, Aqua, Aminomethyl Propanol, Parfum, PEG/PPG-18/18 Dimethicone, Benzyl Salicby DragonFire - General
Nozzles sizes are getting finer... - 8 years ago
Wonder how you are supposed to unblock it?by DragonFire - General
Re: UK Hairspray - 8 years ago
Just about the only "scent free" hairspray with extra hold is this... never tried it for printing though. Should be good enough, judging from the ingredients, but it catches fire very easily if exposed to a naked flame!by DragonFire - General
Re: Flexidrive is Flex3Drive Early Birds - 8 years ago
I can'r help with the blog issue but can confirm the Mini Kossel version of Flex3drive does apparently come with it's own effector, according to...by DragonFire - General
Re: Custom CoreXY - -Linear Rail Vibration - 8 years ago
Sorry, don't follow your logic at all. If you mean a cheap aluminium MGN12 is easier to maneuver with tiny stepper motors, and a steel MGN12 or solid rod is going to stall a tiny stepper motor quicker, that's true. If you mean a steel MGN12 or steel smooth rod cannot support the load stresses better than a moving, reasonating MGN12 made out of aluminium, then most "large machines" will self desby DragonFire - General
Re: What knowledge do I need to designing hotends? - 8 years ago
My 0.02 cents worth - you need to know a lot about engineering, physics, and production methods. The only reason the Chinese won't clone a design is if there is no profit in doing so. Trying to keep the Chinese away from a really good design is not exactly the spirit of Reprap anyhow. You could design a really good hot end and never make a dime out of it. You could design a really bad hot endby DragonFire - Developers
Re: Custom CoreXY - -Linear Rail Vibration - 8 years ago
What limits most printers is how heavy the X / Y carriages are (older Prusas, mendel 90 etc). Microsteps just smooth things out. You could use a supercomputer to calculate the microsteps, but if the motor ain't got the torque to move the carriage, it won't budge past a certain point. CoreXY machine with aluminium MGN12 rails rather than steel smooth rods? WHY???? I suspect the OPs rails are noby DragonFire - General
Re: Need help to choose hotend - 8 years ago
No, Volcanoes are actually better for exotic filaments. They are for printing large engineering objects for machines very well and very quickly. A 3D Printer kit printed on a Volcano should be quality, it just won't have the fine surface detail possible (but slower and more tricky) than the narrower nozzles. A 0.4 Volcano will look just as good as any other 0.4 E3D hotend. It comes down to the nby DragonFire - General
Re: Anyone interested in starting a stepper motor salvage database? I'll be the first to start the list! - 8 years ago
One suggestion - it is good that people are listing model numbers and manufacturers, but there are a lot of dead stepper motors out there to be cannibalized into working complete models. Main failure causes seem to be bearings and coil windings, swapping such components is another viabile way to get some working steppers... especially bearings (a non-turning motor is typically just a seized bearby DragonFire - General
Re: Need help to choose hotend - 8 years ago
Looks to me like, if you use Dondolo, you will need a longer anti-ooze bar at the bottom to fit two Volcanoes. You are looking at quite a heavy x-carriage load if you don't go Bowden, and fitting the heater cartridges might be a hassle (they go vertically).by DragonFire - General
Re: Need help to choose hotend - 8 years ago
The long distance on a Bowden at 1.75 in theory should give less problems, IF it will fit. The main difference between a big nozzle and a little nozzle is how fine detail is captured, or not. The actual dimensions of a print are not altered, so while a Volcano isn't going to print as detailed with a big nozzle, it will print objects as accurately. Nothing to stop you putting a 0.1mm nozzle on aby DragonFire - General
New approach to pulse generation - 8 years ago
It strikes me that current Reprap controllers ALL have the same flaw... they use the processor to generate pulse steps for stepper motors. Why not offload the work to dedicated frequency controllers, freeing up processor time and permitting faster movements from 8 bit electronics?by DragonFire - Controllers