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Everybody here is a developer. Share what you are doing !
Re: RUMBA random disconnects - 10 years ago
One possible cause is because you have a ground loop putting excessive current through your USB cable. This can be caused when your printer ground is at a different voltage to your PC's USB ground. You can check this by unplugging the USB cable and measuring the voltage between the shield of the USB cable and the shield of RUMBA's USB connector. It should be near zero. It could be this is a falseby samp20 - Controllers
Re: RepRap Interface Standard - 10 years ago
Something that may be worth defining for future electronics is endstop connections. Specifically the order of the connections: +------+ |signal| +------+ |GND | +------+ |Power | +------+ Currently there are variations in existing boards, but it would be useful for future developments.by samp20 - Developers
Re: what tunes do your steppers play? - 10 years ago
Does anybody else enjoy the sound of circles? I doby samp20 - General
Re: Rambo 1.2x board - 10 years ago
According to the wiki the rambo has 3 power supplies with the following rating: Heated Bed, 15A 12-24V (version earlier than 1.1 limted to 14A 16V due to fuse rating, see rambo_development for hacks)Extruders and fans, 5A 12-24V (fuse can be exchanged for up to 10A capacity) 10V-26V input voltageMotors, 5A 12-24V (fuse can be exchanged for up to 10A capacity) 10V-26V input voltageby samp20 - Controllers
Waterproofing 3D prints - 10 years ago
I'm currently doing some development on 3D printed piezo inkjets (I'll post in the appropriate place when I have something to show), although am having a problem with water seeping into my parts. Could anyone recommend any techniques I could use to waterproof my parts? Here are a few options I'm currently aware of: Increase flow rate to reduce the chance of small gaps in the print. Cover the prby samp20 - Developers
Re: Generalized Slicer Pipeline - 10 years ago
The pipeline of Cura is fairly simple to understand. This is what it does (simplified): Optimises the model by creating an index of which polygons are adjacent. Slices the model into a list of 2D polygons for each layer Generates a support map from the slices Calculates the layer parts such as perimeter and infill from the slices and support map. Converts the layer parts into G-Code I'm not surby samp20 - Experimental
Re: Forum reorganization - 10 years ago
Do we need the Reprappers forum? The description "People building or using RepRaps" is vague, and consequently the forum has very similar topics to the General forum. I think the two forums could be condensed into one. If that's not an option then the description and/or title of the Reprappers forum needs to be updated to something more descriptive.by samp20 - Administration, Announcements, Policy
Re: Where are the Azteeg X3 v1.2 gerber files? - 10 years ago
QuoteNoobMan I blame our current society design flaw: >> . But i would be very interested what could be actually done in reality cases like this one - i think it goes like that because there is no enforcement tool. It's a controversial option, but we could only allow Open Source products/projects to appear on the wiki. No sources = no page.by samp20 - Controllers
Re: Reprap 2014? - 10 years ago
We do indeed (I should have realised that in my last post). It seem a large number of topics are all ideas and no actual work, which is a bit disappointing. Maybe we need to stop talking and get doing!by samp20 - General
Re: Aluminium RepRap with leadscrews - 10 years ago
I almost forgot about that. When moving 1mm, 40mm/s and 1300mm/s^2, there's roughly 0.4mm of oscillation. That's a cause of the plastic parts flexing a little. At the moment you're right about leadscrews not being beneficial. I have two problems to solve. Firstly the leadscrew itself can move forward and back as the end bearing mounts flex a little. More significant is the leadscrew to bed mountby samp20 - Extruded Aluminum Frames
Re: Aluminium RepRap with leadscrews - 10 years ago
The micro stepping is the same for the x and y axes. I've adjusted the y nut, and took the opportunity to realign the bearing mounts at the same time. The sound seems better now: . Is a NEMA23 still necessary? Alternatively, to avoid redesigning and printing new parts, I could try a dual shaft NEMA17 with a damper.by samp20 - Extruded Aluminum Frames
Re: Reprap 2014? - 10 years ago
QuoteMattMoses QuoteSamS We should have a section where someone pitches an idea ( who wants to develop fudge printing? Here's my idea ) and then people join them more officially than just giving their input. We have this. We totally have this. It's right here. It works. Everything is tested, and running, and there's a tutorial up on the wiki. Nobody uses it. I think SamS is suggesting ideby samp20 - General
Re: Aluminium RepRap with leadscrews - 10 years ago
Here's the video demonstrating the noise: . I lift the printer off the floor so you can hear it without the amplification from the wooden floor. Should I be worried about this, or can I just carry on printing?by samp20 - Extruded Aluminum Frames
Re: Reprap 2014? - 10 years ago
I've added another task on the todo page to tidy up the subcategories and pages under the Development Index (The link in the left navigation pane). For example there's subcategories Development Software and Software when only one is really needed. This probably needs discussing a bit more first. I'll be happy to lend a hand with the tidy upby samp20 - General
Re: Aluminium RepRap with leadscrews - 10 years ago
Thanks for your support cnc dick. I think I've been tackling this vibration problem the entirely wrong way. A few days ago I decided to put some rubber between the bed and leadscrew mount. Looking back, this was a silly idea since it's allowed the leadscrew mount to twist and thus sometimes bind up the nut. What I'll do is revert the change and upload a video for you to look at. It may be that I'by samp20 - Extruded Aluminum Frames
Re: Aluminium RepRap with leadscrews - 10 years ago
I've added some more photos onto the ScrewRap wiki page: The machine is running fairly well right now, although with a long print I had a few skipped steps. This problem seems to have disappeared after reducing the acceleration a little. Although the leadscrews seem to be working fairly well now, I'm not entirely happy. The vibration noise is still too much, and I'm slightly concerned this isby samp20 - Extruded Aluminum Frames
Re: Reprap 2014? - 10 years ago
Should we move this conversation over to the Administration, Announcements, Policy forum? Perhaps two new topics there. One for discussing forum reorganisation, and another for the wiki. Both with the focus of making development easier to find. If this is a good idea then I'm happy to create these topics * and quote relevant points that have been made already. * When I get home from work tonightby samp20 - General
Re: Reprap 2014? - 10 years ago
Occasionally you can find a new idea, but you have to be very active to spot it before it gets burried under all the help requests. For example this topic was created recently which could lead somewhere if someone is willing to experiment: . Maybe there needs to be a clearer separation between help and development.by samp20 - General
Re: Idea for full color FFF/FDM printing? - 10 years ago
I've been thinking about this for a while. This topic discusses ways to make a diy print head: . Also I did a little expetiment printing ink onto PLA: . It would be great to see some progress made on this idea Edit: this topic would be a lot better suited to the Developers sub-forum. It will quickly get lost under General.by samp20 - Developers
Re: 3D printer for a business (UK) - 10 years ago
I'm posting this update for anyone who finds this topic in the future: In the end we managed to get a separate quote via e-mail for our records, but still go through the on-line ordering system using our P-Card. Also we had an unfortunate mis-typing of one of our email addresses, but thankfully we had some people on the CC list. That explains why we thought replies were slow. The order has beenby samp20 - Wanted
Re: A Plastic Solder Pen for Sculpting? - 10 years ago
If you do go for a soldering iron, make sure it can go down to at least 200 Celsius. I used the soldering irons at work successfully at that temperature for PLA. If the soldering iron is too hot then you risk burning/discolouring the plastic.by samp20 - General
Re: Aluminium RepRap with leadscrews - 10 years ago
QuoteStaffordknot I'm not entirely sure what the figures on pitch etc mean or how they effect the performance? Do you mind me asking how much each one cost? Cheers The effective pitch is the distance the leadscrew will move per 1 revolution. This will determine the steps/mm of your printer. Also you can get multi-start leadscrews which have multiple threads. This allows for a smaller diameter lby samp20 - Extruded Aluminum Frames
Re: Rapid Tool-Head changer (very light multi-extruder) - 10 years ago
To control the temperature of docked extruders you could replace the heater/thermistor wires with power/data wires. Protocols such as i2c or SPI would allow you to address each extruder individually to control their temperature. This would have a few advantages: Fewer analogue inputs and PWM outputs required on master controller. Temperature control calculations (PID) offloaded onto each extrudeby samp20 - Developers
Re: Rapid Tool-Head changer (very light multi-extruder) - 10 years ago
Could you design a 3D printed interconnect. I'm thinking adhesive copper foil stuck to some plastic tabs that act like sprung contacts. Attached is a quick sketch of my idea. Orange =copper foil, Pink = wires. With a bit of thought you could probably create a better design.by samp20 - Developers
3D printer for a business (UK) - 10 years ago
Dear All, I'm looking to buy a 3D printer on behalf of the company I work for in the UK. Originally I was looking at buying the Ultimaker 2 since it's pre-assembled, and seems to be easy enough for anyone to use. Unfortunately they did not have very good customer service to date due to our purchasing requirements. We cannot use Ultimaker's online basket since we required a quote. Also our paymenby samp20 - Wanted
Re: Aluminium RepRap with leadscrews - 10 years ago
Quotekarabas Any news? Sorry, I'm feeling a bit ill at the moment with my Crohn's, so not much more progress lately. I have done a bit of cable management since last time, but that's about it. When I'm feeling better I'll try and make a guided tour video of the printer. Don't let me forgetby samp20 - Extruded Aluminum Frames
Re: Quality of youtube videos concerning 3D-printing - 10 years ago
For me a good 3D printing video would involve the owner taking about how it works, what modifications they've made, printing parameters, problems etc. A short clip of the printer in action is okay, but not several minutes long. EDIT: Oh, also the YouTube stabilisation feature looks horrible.by samp20 - Reprappers
Re: Aluminium RepRap with leadscrews - 10 years ago
The problem was a flexible bed to nut attachment. I've now designed and printed a sturdier mount which seems to have significantly improved things. I've also shimmed the bed to linear bearing mounts with a few pieces of paper to get the leadscrew nut holder vertically centred. The new mount and the paper have also reduced the vibration to levels I think are acceptable.by samp20 - Extruded Aluminum Frames
Re: 10K Glass Bead thermistor replacement - 10 years ago
Maybe something like this: . You still need the tubing on the leads though. A search for "reprap thermistor" gives you a few results.by samp20 - Controllers
Re: Quick 3d printing survey: help me with my Master of science in less than 5 minutes - 10 years ago
If you were lying then shame on you Francesco (as if you care). I think I'll fill out the form again with contradictory information to what I initially put. I hate it when my helpfulness gets taken advantage of.by samp20 - General