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People building or using RepRaps.
Re: Where to get 20x20mm aluminum extrusion - 10 years ago
ledaero, have you got a link ?by dave3d - Extruded Aluminum Frames
Re: Filtration System - 10 years ago
Here is an older photo. It is in bits at the moment while I do some more mods. Bed size is standard reprap 200 x 200.by dave3d - Safety & Best Practices
Re: Bowden vs Direct Feed Extruder? - 10 years ago
I have gone Bowden with my OrdBot. I have a standard 1.75mm jhead with Wade extruder mounted on the top of the frame. Bowden tube is only about 300mm. Reason for going Bowden was because I wanted to increase printing speed to shorten print times and also I want to go multicolour. I figured lightening the x carriage load was neccessary for getting the speed up. I have found the settings are moreby dave3d - General
Re: J-head assembly? - 10 years ago
I first use heat transfer paste on the resistor, then I thread ptfe tube over the wires to insulate them and I then bend them flush to the sides of the peek bit. I then secure it with two narrow strips of E-Z Fuse self amalgamating tape. It withstands 500 deg F (and is made in the US). Better than Kapton for this application. Cable ties only work at the cold end of the peek bit, I have found. Iby dave3d - Reprappers
Re: PLA to be made from poo. - 10 years ago
Explains why my prints are often crap.by dave3d - General
Re: hollow lock set screws for jhead - 10 years ago
Anyone? It is holding me up at the moment. Does nobody make jheads in Europe? Only suppliers I can find are in the US and won't ship to the UK or else China where there is a minimum order of 10,000.by dave3d - Reprappers
Re: hollow lock set screws for jhead - 10 years ago
Thanks. I checked out the website and while there are lots of set screws, I cannot find any hollow lock setscrews.by dave3d - Reprappers
Re: Filtration System - 10 years ago
I have got an OrdBot Hadron, which I ordered from the US as kit. I have since modified it quite a bit.by dave3d - Safety & Best Practices
hollow lock set screws for jhead - 10 years ago
I need a UK or European source for hollow lock set screws for a jhead. I wish to start making my own having recently invested in a model making lathe. I placed an order with McMaster-Carr in the US, but they would not accept it. Quote "Due to the complexity of US export regulations, McMaster-Carr only accepts international purchases from our established international customers." un quote. I canby dave3d - Reprappers
Re: Colour mixing now a reality - 10 years ago
Printing with 3 primary colours, an RGB printer in effect, would in theory allow sophisticated multi coloured art work or lettering to be incorporated within the print if the software was capable of it. This would be a game changer. Xabbax, after your earlier post I started to source the bits to make a hotend myself. I have not got very far yet. It is a fairly complicated assembly that needs toby dave3d - General
Re: Filtration System - 10 years ago
Not sure which country you are living, but I am in the UK. A simple replaceable carbon filter in a purpose made plastic housing with a mains powered extraction fan? Needs to be less than 100 euros I think. With a built in alarm ........... maybe 150 euros max. Building it with a large hood that covers the entire printer, quite a bit more. Who knows?by dave3d - Safety & Best Practices
Re: Steps Lost - 10 years ago
Yes, well done Gabriel. You can now advise others!by dave3d - Reprappers
Re: My ABS won't dissolve into Acetone? - 10 years ago
I have given up on black ABS. One spool I have got stunk out the living room. God knows what was in it, full of all sorts of recyled junk and dyed black.by dave3d - Reprappers
Re: Filtration System - 10 years ago
Fouthdimensions: I have about 18 months 3d printing experience now. If you had asked me a year ago I would have said no, but now I know a bit more about the hazards I am planning on some sort of extraction or filtration. 3dkarma: People getting ideas from others on here then starting a Kickstarter project does not sit well with me. It would certainly make me more reluctant to make suggestions.by dave3d - Safety & Best Practices
Re: Steps Lost - 10 years ago
Also think about buying the Reprap Discount LCD screen. It plugs into the RAMPS and has an SD card slot.by dave3d - Reprappers
Re: Steps Lost - 10 years ago
Gabriel, as I said, my problems were caused by my computer. I am using an old slow Panasonic Toughbook on XP. I know you say you have tried another computer, however shut everything down that you don't need, particularly the WiFi. Also stop things like hibernating, screen saver, virus scans, updates, power saving modes ect. It may be trying to power down com ports. Use Task Manager and shut dowby dave3d - Reprappers
Re: Steps Lost - 10 years ago
Quotegabgomez Yes, the motors are Nema 17. What voltages values should I spect to find? I moved the trimpot and found different values according to the power the steppers were taking. I set my steppers on 0.32v to start with: Max amps say 0.4A for nema 17 ref. volts = 0.4A x 8 x 0.1 = 0.32v I have since turned them up a bit to 0.36v. When measuring with the voltmeter, I used the -ve to a coby dave3d - Reprappers
Re: Filtration System - 10 years ago
Schools project or Kickstarter project? Are you a teacher?by dave3d - Safety & Best Practices
Re: Steps Lost - 10 years ago
Gabriel, I have the same Arduino as yours. Check your stepper driver voltage settings first so that can be eliminated. It is easy to do but needs a digital voltmeter. Are your motors NEMA 17?by dave3d - Reprappers
Re: Steps Lost - 10 years ago
aleatory? I had to look that word up. I have just been through a similar problem with my printer. As well as the above advice, use a meter to set the stepper voltages. Also it may be your computer. It was with mine. You can set the slicer program to high priority in task manager and don't do anything else at the same time, like surfing the web. If you can, run the printer direct from an SD card.by dave3d - Reprappers
Re: Self-Regulating Heater - 10 years ago
I used an Aico Ei141 ionisation type smoke alarm together with a Aico Ei128R base unit that houses a switching relay. The base unit clips on to the underneath of smoke alarm to make a nice neat unit. It is a little large but there may be other smoke alarm manufacturers that make one with a relay. The operation of the relay is only momentary, so another relay is required to make a latching circuiby dave3d - Safety & Best Practices
Re: Self-Regulating Heater - 10 years ago
WolfgangA: are you are going to build one for your own use or use the idea for a kickstarter project?by dave3d - Safety & Best Practices
Re: Good, Fast, or Cheap? Pick Two - 10 years ago
Brian, I could not agree more. I have bought several j heads and parts from you after bad experiences with another make and type of extruder. I wanted trouble free operation and ordered from you because of your good reputation. I am an engineer with my own model making lathe and I think your machining is superb. I could have got cheaper or faster (I am in the UK and ordered from the US) but not bby dave3d - General
Re: Ideas for fireproof printer enclosure - 10 years ago
I don't think ordinary plasterboard is a suitable material. It is just made from gypsum on a canvas backing. It does not have the fire resistance. Fire cement could be used to cast an enclosure. It is fairly easy to work with and you could make a big box. If you look on YouTube there are lots of examples of home made furnaces. It may be suitable to house such an enclosure in the garage or basemenby dave3d - Safety & Best Practices
Re: Is my heated bed glass too thick? - 10 years ago
I am using 6mm glass on a standard 12v reprap bed heater. It works fine. One advantage is that it is more robust compared with 3mm glass. It is a nice firm base for printing on. I bought float glass which is dead flat. Slight trade off is that it takes slightly longer to heat up due to the greater mass. Also glass is not a thermal insulator. It is an electrical insulator. It actually conducts heby dave3d - General
Re: Kickstarter: Smoke Detector + EPO for 3-D Printer safety - 10 years ago
I built one using exactly the same principle 9 months ago. I reported on it here. I have used off the shelf parts using an Aico Ei141 ionisation type smoke alarm with an integral Ei128R base unit that houses a switching relay. A latching relay is required for the circuitry and this is housed in a separate box in exactly the same way. Does anyone know if he is a member of this forum?by dave3d - Safety & Best Practices
Re: E3D Bowden fitting - 10 years ago
I have fitted a 2mm bowden tube to my jhead/Wade extruder. I have found that not all of the pneumatic push fittings are the same. Quality varies between suppliers and even within the same batch. Some I fitted allowed the tube to move backwards and forwards during retraction. This allows a lot of hysteresis in the mechanism. Replacement of the fitting as soon as play is observed is easy and quick.by dave3d - General
Re: Smoke detector selection - 10 years ago
I have installed an ionisation type fire detector that has a relay and cuts power to the printer. I have been using it for over 6 months without any problems. I tested it with a lighted match but it has never been used in anger.by dave3d - Safety & Best Practices
Re: Yes, 3D printers can go on fire. - 10 years ago
QuoteGregor R What if you just wrap solder wire (without flux core) with the appropriate melting temperature with one or 2 turns around your extruder head. Insulating the wires from the extruder with Kapton before of course. Trough that solder wire you power your heating element. If now the extruder overheats the solder wire will melt and reliably cut the power to the heater. What you are proposby dave3d - Safety & Best Practices
Re: x axis missing steps - 10 years ago
Andrew, I turned the trim pot down on the stepper driver. I am using G3D drivers with nema 17 motors. There are actually two trim pots on the driver. I set the ref voltage to 0.32v.... no effect. I then physically changed over x and y drivers ....... no effect. The drivers run very cool. Cool enough to touch since I fitted a solid state relay to control the bed. Max amps say 0.4A for nema 17by dave3d - Reprappers