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Re: MakerFarm i3v or OrdBot Hadron? - 11 years ago

QuotePrintThings wrote: Dave3d, how is the Z wobble problem easily fixed? I have these fitted: I got the kit from ATI and they were included. I later fitted longer trapezoidal lead screws so had to modify them to accept larger acme type nuts. I have also fitted these: I have built two spool holders: and I have recently fitted a Misumi extrusion across the top with twin bowden Wade ex

by dave3d - General

Re: MakerFarm i3v or OrdBot Hadron? - 11 years ago

Looks a nice job runninfarmer.

by dave3d - General

Re: MakerFarm i3v or OrdBot Hadron? - 11 years ago

I have got a Hadron. It is a very flexible design that lends itself to modifications. I like the rigid frame made out of Makerslide and Mitsumi extrusions. The engineering is good, better than rods or wooden sides. The Z wobble problem is easily fixed. I also now have acme threaded rods. You can put any extruder you want on it but stay away from the QU-BD. I have fitted a standard Wade. I woul

by dave3d - General

Re: ABS not truly dissolving in acetone, is it ABS? - 11 years ago

Black ABS is full of all sorts of recycled junk (more correctly known as regrinds). It is masked by the black pigment. Also old car parts made of ABS are now recycled.

by dave3d - General

Re: Why no love for the ORD Hadron? - 11 years ago

I have recently built an OrdBot Hadron and I am about 6 months down the line with it now. I live in the UK and I imported the kit from ATI in the US. There are I think only two companies supplying the kits. That is ATI (Automation Technologies Inc) and RepRap Discount in HongKong. Both sell quality parts. There is also a guy in the US that sells fully assembled and calibrated OrdBots called Punch

by dave3d - General

Re: Anyone know where to by PEEK tubing? - 11 years ago

Here is a source for peek rod. You would have to bore it out yourself:

by dave3d - Reprappers

Re: Twin extruder height adjustment - 11 years ago

I have not tried shimming. I was really looking for a simple screw adjuster. I mounted the twin extruder plate on slots so it could be tilted side to side across the X axis. The idea was to allow adjustment of the relative heights of the two extruders but it is not very satisfactory. The OrdBot has a pretty rigid frame and I have squared X and Y axis using a set square. I levelled the bed relat

by dave3d - Reprappers

Twin extruder height adjustment - 11 years ago

I have experimented with twin extruders on my OrdBot but I have not satisfactorily solved the problem of getting the nozzle heights (Z axis) the same. I am using two Jheads with bowden tubes fed from static Wade extruders (1.75mm filament). I am looking for a few ideas for a simple mechanical adjuster that is easy to fabricate.

by dave3d - Reprappers

Re: Importance of a fan shroud? - 11 years ago

I have bought two 1.75mm/0.4mm nozzle Mk V Jheads plus a few spare parts from Hotends.com. The machining is first class as is the service. They work very well on ABS. I don't have much experience with PLA. I have just bought a micro lathe and a few lengths of peek and ptfe rod so I might have a go at making my own designs.

by dave3d - General

Re: Importance of a fan shroud? - 11 years ago

Hi Ohmarinus, I am using your Jhead cooling shield on my OrdBot. It works very well (I am dave3dprinter on thingiverse). I do just ABS now at 235 deg C. I have a hotends.com Mk V jhead and your shield with a 30mm fan on full all the time. It is wired in parallel with the heater. On mine I found the temperature would occillate a bit when cold air was blown into the shield. I reversed the fan so

by dave3d - General

Re: Free Book. 3D Printing: Rise of the Third Industrial Revolution - 11 years ago

I have just downloaded it. Before it let me, I had to install a "Kindle for pc" app on my laptop which links to my existing Amazon account. There is no need to remove the DRM. Thank you BlackDogConsulting. I will read it.

by dave3d - General

Re: Up and Running - 11 years ago

For a first print that is very good. I have got an Ordbot Hadron. Did you buy yours fully assembled or as a kit ? I struggled for ages with a QU-BD extruder before abandoning it and going for a jhead and Wade extruder.

by dave3d - Reprappers

Re: Back Pressure ( still ) - 11 years ago

A2: you have provided a lot of interesting information there. I think if the plastic is being used for injection molding, making low tec items like plastic buckets, etc., the contamination is less critical. For us home printers that use filament the spec is critical. I have never seen manufacturers state 100% virgin in the spec.

by dave3d - Reprappers

Re: Back Pressure ( still ) - 11 years ago

Try a different colour first. I know black ABS is full of all sorts of crap (regrinds is the proper word). PLA is probably the same.

by dave3d - Reprappers

Re: how to add fan for extruder? - 11 years ago

I use this 30mm fan duct by Ohmarinus on my jhead:- It works well, but I found that temp control was more stable with fan rotation reversed. I wired it in parallel with the heater. I do ABS more or less exclusively now.

by dave3d - General

Re: AutoTune Hotend and Bed Question. Ramps 1.4 - 11 years ago

I tuned mine for 230 deg C ( I mostly print ABS). This was with a resistor heater. I haven't used a cartridge type yet. Send: M303 S230 I got Kp 15.59 Ki 0.65 Kd 94.00 Looks like your proportional band Kp is too wide causing overshoot. Suggest you try my settings to get you started then do another tune. Also I am using a bog standard Jhead from hotends.com. 1.75mm filament, no insula

by dave3d - Reprappers

Re: WOW New Materials!? - 11 years ago

at $550/lb it wouldn't do to have too many prints fail. It would stress me out using it.

by dave3d - General

Re: Ord Bot: Heating Bed unable to reach 110C. Please Help ! - 11 years ago

Did you not read my post? That is what I said.

by dave3d - Reprappers

3D App for Iphone - 11 years ago

There is a new app out for the iphone which allows it to take 3D pictures. It is called Seene. I Googled it and read positive reports on the net. I immediately thought about using it for 3D printing. Unfortunately I don't have an iphone. Anybody care to try it out and report back? It is free.

by dave3d - 3D Scanners, Book Scanners, and Optics

Re: AutoTune Hotend and Bed Question. Ramps 1.4 - 11 years ago

My Ord Bot bed is set up in Marlin with just on/off control or so called bang-bang. It is full on if the temp is under the set point. I did about 3 PID tunes on the extruder and took an average of the values.

by dave3d - Reprappers

Re: Ord Bot: Heating Bed unable to reach 110C. Please Help ! - 11 years ago

I have not long built an OrdBot Hadron. The bed that came with my kit needs +12v on terminal 1 and terminals 2 and 3 need bridging together and connected to -ve. If you don't bridge the connections, it acts as a 24v bed. Mine is still slow. I put some loft insulation under the bed and use a piece of thick cardboard on the top during heat up. I also used to have cycling with my hotend until I d

by dave3d - Reprappers

Re: SOLVED::Ramps 1.4 and Endstops - 11 years ago

I also inserted the end stop plugs the wrong way around when I first built my printer. It caused a direct short between 5v and GND. It damaged the Ramps board and I had to replace it.

by dave3d - RAMPS Electronics

Re: Looking to replace bent 8m threaded rod Help - 11 years ago

I upgraded my OrdBot with these trapezoidal threads: You also need the right nuts for the rods. Z axis runs a lot smoother now. Ordinary threaded rod is notoriously difficult to get straight.

by dave3d - General

Re: Dedicated 3D Printer comp/laptop? - 11 years ago

I am running my 3D printer via a Panasonic Toughbook that I bought originally to run diagnostics for my car. The laptop is virtually indestructable. Weighs a ton. It runs 32 bit Windows XP at 1.3 GHz ! and is absolutely fine for the job. It does not like me surfing the web or doing other jobs at the same time but if just doing printing it is OK. I am not recommending you buy one as they go for a

by dave3d - General

Re: LCD with Marlin displays garbage - 11 years ago

I have had the same problem with my printer, an OrdBot. I am using Arduino Mega 2560/ Ramps 1.4 and a Reprap LCD screen. I rapped the ribbon cable with foil. It improved it but did not entirely eliminate the problem. Recently however I have printed an LCD case and the screen has not broken up since. Another problem was stopping mid print and I found that was the USB lead. I changed it for one w

by dave3d - Firmware - mainstream and related support

Re: Shipping cost in Ebay suddenly much higher when paying - 11 years ago

I am in the UK. I have learnt from experience that when you order from the States the postage is often for just within the US mainland. You need to check carefully before you buy.

by dave3d - General

Re: ABS Grades - 11 years ago

John, Thanks. The filament I bought I don't think can be classed as cheap filament. It is sold as "Jet Filament" and made by America Instrument. It was made in the States and was over 30 GBP per spool. I bought it because I had heard good reports. As I said the other colours are OK. I think to recycle it internally within a factory as re-grind is one thing; the process is under your control, b

by dave3d - General

ABS Grades - 11 years ago

I have noticed a difference in quality between black ABS and other colours. I don't know if anyone else has noticed a difference. The black ABS does not extrude as smoothly. It seems a bit lumpier and the lines in the finished print show up a lot more. I have tried a couple of suppliers but the latest filament I bought (1.75mm) came from America Instrument via Amazon in the UK. The red, yello

by dave3d - General

Re: Fire safety command? - 11 years ago

Ohmarinus: you are right. I would not disagree wiith anything you have said. Electrical wiring is an important safety factor. Problem is when you do you own build some parts of the build are not quite as you want them. I have recently built an Ord bot and I have tried to pay attention to the wiring. Some of it is run in metal springs but I have still got my Ramps board hanging off the back.

by dave3d - General

Re: Yes, 3D printers can go on fire. - 11 years ago

I have now wired my smoke alarm via a second latching relay and it cuts the mains power and stays off. Hope now it does not need to be used.

by dave3d - Safety & Best Practices