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Rostock, Kossel, Simpson, 3DR, and more. See: http://reprap.org/wiki/Category:Delta. Previously named "Delta Robots and Stewart Platform"
Next Auckland 3D Printing Meetup Sat 21/2/15 - 9 years ago
Hi all, The next Auckland 3D Printing meetup is already booked in for Saturday February 21st 2015. More information at: http://www.meetup.com/Auckland-3D-Printing-Meetup/events/219403859/ Please RSVP if you want to come.by mikep-nz - New Zealand RepRap User Group
3D Prinitng Meetup in Auckland - 9 years ago
Hi folks, Sorry for such late notice but there's a 3D printing meetup this weekend (10th January 2015) For more information visit http://www.meetup.com/Auckland-3D-Printing-Meetup/events/219384306/ If you can't make this then the next one is going to be 21st February 2015. Chees, Mike Paauweby mikep-nz - New Zealand RepRap User Group
Re: Auckland Meetup - 10 years ago
Feel free to organise one. they are remarkably easy to do. I've just been a bit busy (who isn't) use Regards, Mike Paauweby mikep-nz - New Zealand RepRap User Group
Re: Delta-Pi "Flexing" hub - 10 years ago
Who is the manufacturer of your printrboard? There's a dodgy version that uses a modified design and only 2 PCB layers. The proper design is a 4 layer board. To drop the extra 2 layers they have replaced the power plane with a single thin track that winds its away around the board and supplies power to everything.by mikep-nz - Delta Machines
Re: Hello glad to be here,Questions about Prusa i3 single-plate "vanilla" Plastics - 10 years ago
Hi Mar57, I have a couple of options for you. You can buy the 4 way DuPont 0.1" connectors from me or you can buy premade jumpers that you can cut and join onto your stepper motor wires. When it comes to wiring all that matters is that you wire one coil to the 1A-1B terminals and the other coil to the 2A-2B terminals. The polarity doesn't matter. If you get it wrong the motor will turn in theby mikep-nz - New Zealand RepRap User Group
Re: Have you seen the Delta-Pi? - 10 years ago
Hi TTN, I can't provide you with pictures but I am drawing on personal experience. The crossed roller design came from a friend's machine and he had used Aluminium with steel bearings. The machine was relatively new but already some of the bearing surfaces were becoming rough. My experience with using Aluminium as a bearing surface is that it has a very short lifespan in just about any applicatby mikep-nz - Delta Machines
Re: I'm stuck: Trying to set up Diagonal Rod Arms - 10 years ago
Sorry to contradict you but the build envelope is not cylindrical. The attached plot shows the build envelope for the original Rostock dimensions.by mikep-nz - Delta Machines
Re: Delta-Pi "Flexing" hub - 10 years ago
Have you got fans and heat sinks on your stepper drives? My first guess would be your stepper drives are overheating and dropping steps. Try dropping the motor current if you can't add fans and heat sinks straight away. When they overheat and shut down it only takes a fraction of a second for them to cool enough to start working again. It looks just like slipping.by mikep-nz - Delta Machines
Re: Delta-Pi "Flexing" hub - 10 years ago
Hi Beamsaber Those joints do need to be free to move but also need to be free from play. To achieve this can take a bit of fiddling with the clevis bolts and their nylock nuts. Make sure you make up the arm assemblies and adjust them before you try attaching them to the carriage or the hub. Cheers, Mike Pby mikep-nz - Delta Machines
Re: Delta-Pi Endstop Problem in Repeteir - 10 years ago
Congratulations on the milestone. I don't know why the print would be distorted like that but having a tower out of position would be my first guess too. It would pay to recheck the tower positions. As a verify check you can measure between any convenient point on one tower and a point on the next tower (not necessarily the same point). Make the same measurement on the 3 towers and the distancesby mikep-nz - Delta Machines
Re: I'm stuck: Trying to set up Diagonal Rod Arms - 10 years ago
Quotehercek #define DELTA_RADIUS (DELTA_SMOOTH_ROD_OFFSET-DELTA_EFFECTOR_OFFSET-DELTA_CARRIAGE_OFFSET) #define DELTA_DIAGONAL_ROD (2*DELTA_RADIUS) Not sure where that code comes from. I haven't seen it in any of the firmware I use. Johann's original Rostock used 250mm and 124mm for rod length and radius. and I worked out that a 2:1 ratio was optimal to give you the largest build area for a gby mikep-nz - Delta Machines
Re: I'm stuck: Trying to set up Diagonal Rod Arms - 10 years ago
Delta Rod length needs to be measured and most important is that all rods are as close to the same length as you can get them. You need to anchor your dimensions in the real world and delta rod length is the one dimension you can measure accurately. All the other dimensions are much trickier to measure As well the other 3 (DELTA_SMOOTH_ROD_OFFSET, DELTA_EFFECTOR_OFFSET and DELTA_CARRIAGE_OFFSET)by mikep-nz - Delta Machines
Re: Delta-Pi Endstop Problem in Repeteir - 10 years ago
Calibration of Delta-Pi is no different to any other delta printer. There are several good posts already on how to do the calibration so I will just give you a quick version here. It will take you at least an hour to do it properly. Maybe longer the first time. There are 5 stages you need to go through in order. Adjust Z_MAX_LENGTH Adjusting the tower end stops Readjust Z_MAX_LENGTH Adjustingby mikep-nz - Delta Machines
Re: Delta-Pi Endstop Problem in Repeteir - 10 years ago
Stepper motors are noisy. The step frequency is normally right across the audible range. Having said that if you feel your printer is too noisy you can try these things: Put some squares of carpet or foam between your printer and the table it's sitting on. It's amazing how effective this can be. The table top can act like a speaker, amplifying the vibrations from the printer. Reduce the steppeby mikep-nz - Delta Machines
Re: Delta-Pi Endstop Problem in Repeteir - 10 years ago
You should have "#define MOTHERBOARD 33" in the first section of your configuration.h file. If you do then the code you edited does nothing and if it made any difference then it was just coincidence.by mikep-nz - Delta Machines
Re: Delta-Pi Endstop Problem in Repeteir - 10 years ago
You shouldn't need to mess with the PINS settings. RAMPS1.4 is covered by #define MOTHERBOARD 33 If you use this then in pins.h it is already configured as this: #define E0_STEP_PIN 26 #define E0_DIR_PIN 28 #define E0_ENABLE_PIN 24 Here's a couple of other settings I think I may have changed from default.(can't remember for sure) #define ENDSTOP_X_RETEST_REDUCTION_FACTORby mikep-nz - Delta Machines
Re: Delta-Pi Endstop Problem in Repeteir - 10 years ago
Here's a screen shot of my Slic3r speeds tab. The speeds are the same as I use on my Prusa-Mendel So I'm doing perimeters at 50mm/s and infill at 80mm/s But then the outermost (external) perimeter is set to 80% = 40mm/s And the first layer speed is set to 50% so for the first layer the perimeters will be done at 25mm/s except for the external perimeter which will be at 20mm/s and the infill wiby mikep-nz - Delta Machines
Re: Delta-Pi Endstop Problem in Repeteir - 10 years ago
So I have the offsets commented out and just define the DELTA_RADIUS directly. Leave the DELTA_DIAGONAL_ROD set to the length you made the rods to. This is a known and hopefully accurate measurement after all. You need to adjust DELTA_RADIUS so that the build plane is flat. The theoretical value if you build to the plans is 125mm. But as you can see my printer needs 126.77mm Typically I think thiby mikep-nz - Delta Machines
Re: Delta-Pi Endstop Problem in Repeteir - 10 years ago
Just watching your video again it looks like the non-printing moves are happening at high speed. I would be inclined to think that you have something set wrong in Slic3r Check the 1st layer speed setting. This can be either a speed or a % depending on how you enter it. Try sending the following Gcode from Repetier Host and timing the moves. G29;HOME G01 X0 Y-50 Z100 F12000 G01 Y50 F1200; Shouby mikep-nz - Delta Machines
Re: Delta-Pi Endstop Problem in Repeteir - 10 years ago
Hi Tyler, Can I just cover off some basics with you first. What brand of stepper drivers are you using? (Some brands use different sense resistors and require different voltages) Are you using 0.9° or 1.8° motors? I used 0.9deg/step motors on the prototype and I found that with 1/16 microstepping the pulse frequency exceeded what the RAMPS could output. What micro-stepping setting are you using?by mikep-nz - Delta Machines
Re: Prusa I3 BOM Help - 10 years ago
Hi Zerker, To answer your last question... There's no real problem with using either and there are plenty of RepRaps made that way. But here's why you might want to consider spending a bit more on stainless and proper linear guide rail. Zinc plated mild steel threaded rod is not usually made to the same quality as stainless threaded rod. The threads are rolled into the rod and the pitch can varby mikep-nz - New Zealand RepRap User Group
Re: Delta-Pi Design Prototype - 10 years ago
Hi TTN, The Rostock pictured belongs to a friend of mine. He since pulled his Rostock to bits and recycled it into a Delta-Pi. The motors, belts, pulleys and dimensions are identical for Rostock and Delta-Pi so there should not be any difference. The reality is that accuracy and precision are more determined by build quality and the stiffness of the frame. In the case of my freind, he did a verby mikep-nz - New Zealand RepRap User Group
Re: Have you seen the Delta-Pi? - 10 years ago
Hi TTN, Thanks for the encouragement on my Delta-Pi Prototype. There are a few under construction around NZ and Australia. One in Auckland is doing a lot more printing than the prototype has. I had my own design of hot-end on it and it kept giving me problems and jamming on the PLA. I've just got myself an E3D hot end to trial and I have high hopes for this. I've also implemented a bed levellby mikep-nz - Delta Machines
Re: PrintrBoard - 10 years ago
You don't want one of those (Geeetech) Printrboards. They are not to the original design. They have redesigned the board from 4 layers down to 2 layers and they have done a poor job of the redesign. Their other products are OK as far as I can tell. Just steer clear of their Printrboardby mikep-nz - New Zealand RepRap User Group
Re: Stepper motors - now starting to collect parts - 10 years ago
Hey Waitaki, do you know what current you are putting through your steppers? If they are barely getting warm then it is probably very low. Probably less than 1/2 their rated current. That's perfectly OK. I usually recommend no more than 70% of the rated current to my customers. Any higher than this and the motors get hot enough to melt any PLA parts you bolt them to. Lower current also makesby mikep-nz - New Zealand RepRap User Group
Re: Stepper motors - now starting to collect parts - 10 years ago
Yes you can run 2 steppers off one drive. You must watch the current requirement though. The driver can only supply 2A max with fan cooling and 1A max without fan cooling. So if you have stepper motors capable of drawing more than 1A you have to wire them in series. If you use the two connectors on the RAMPS board you are wiring them in parallel and you will overload the driver.by mikep-nz - New Zealand RepRap User Group
Re: Reprap for high school science/technology department? - 11 years ago
gmiller, What region are you located in?by mikep-nz - New Zealand RepRap User Group
Re: Hotbed for $18.25 - 11 years ago
A very simple solution Mr Waiata and sounds like it's working well. Very glad to hear you're printing up a storm with that printer. For others who may not be as keen to DIY at that level My heatpads have been used directly stuck to glass sheets. They cost another $20 but they have the thermistor embedded in them and all wired up. http://www.makershop.co.nz/Heaters/HeatPad200mmby mikep-nz - New Zealand RepRap User Group
Re: New Member wanting to Build any help would be awesome! - 11 years ago
Hi Kev, If you are available this Sunday (30/6/13) there is a meetup at my place. http://www.meetup.com/Auckland-3D-Printing-Meetup/ Please sign up and RSVP if you are coming. Regards, Mike Paauweby mikep-nz - New Zealand RepRap User Group
Re: Auckland 3D Printing Meetup - 11 years ago
That should not be a problem. Although if you have time to place the order before hand it will save time and mean I can stay focused on my guests instead of in the office doing receipts. Regards, Mike Paauweby mikep-nz - New Zealand RepRap User Group