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General discussions. For specific printers / electronics / fabrication methods / softwares, please see other sections.
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3 points are level but bed is sloped - 4 years ago
Hi All, I have 3 point bed, from this youtube video the 3 points are level to within ~0.04mm. However the last two furthest corners form an incline. Is there any other explanation other than the aluminium bed is warped ? What solutions are available ?I can get one of the far corners level with the two near corners then drill a hole on the other corner and use a jack screw, but this essentially cby eci22 - Prusa i3 and variants
Re: Opening a 3D Printing Facility - 8 years ago
ah that's great ggherbaz, I'm about to start something very similar here in England your input is greatly appreciatedby eci22 - General
Re: Opening a 3D Printing Facility - 8 years ago
Hi ggherbaz, when you say 150 for the year, does that mean a student pays 150 and you teach them for the entire academic year ? sorry if I've missed something. Presumably they didn't get to keep the printers at the end ?by eci22 - General
Re: Inverse Kinematics Application ? - 8 years ago
Hi Srek, Thanks for your reply, I can see how it would be used in a software environment in games, animation etc, because all the objects have the same reference space (world co-ordinates) So giving a body some co-ordinates to reach for would work as it knows what those co-ordinates represent. But how does this work in the real world, with real objects where there is no such thing as model/worldby eci22 - General
Inverse Kinematics Application ? - 8 years ago
Hi All, I was wondering if anyone could clarify how inverse kinematics are actually applied in a practical application, here's the scenario I'm having trouble understanding. Say you have a regular 2 wheel drive car type robot. You press a key on an input device say forward on an app, the controller reads the input and sets the appropriate inputs on a H-bridge and you have motion. When the inputby eci22 - General
Re: seen a broken 2nd hand ultimaker original, is it worth it? - 9 years ago
I would recommend you browse the mendel90 sub forum. I think the dialogue and support between the customers and the creator is worth the extra money alone. If it was my first printer I'd know where I would prefer to get help from.by eci22 - General
Re: How to integrate "own" code into firmware like repetier/marlin? - 9 years ago
As long as the declaration has been added in the header file for the Commands class. You will then have to decide where the most appropriate place to make your new function call would be.by eci22 - Developers
Re: How to integrate "own" code into firmware like repetier/marlin? - 9 years ago
Open the Marlin code in the Arduino IDE (the PDE is provided). At the top you will have a list off all the different marlin modules represented as tabs. Edit the code, re flash and test. Marlin_Main,cpp is where the setup and main loop occur. So everything stems from those two functions. EDIT: Assuming you're using marlin, for other firmware it's the same idea- download the code, modify, compileby eci22 - Developers
Re: Safest way to split AC line and residual power - 9 years ago
Thank you for the responses. Something I forgot to mention is the IEC socket is already fused, therefore does fusing the individual units become redundant ? About putting the E-STOP between the motors and their drivers, the issue I see here is what if there's a problem with the PSU's or with the micro controller (Arduino), also in that position the spindle would stay powered. Thanks again forby eci22 - General
Safest way to split AC line and residual power - 9 years ago
Hi all, For my current project I need to power two devices (CNC spindle PSU, and Motor PSU) in parallel from a single AC line. What is the safest way to split the live line into 2 ? There seems to be quite a few options, the obvious is to simply strip the end of the cable then solder two wires to it then cover with heatshrink. Another option would be to use a screw screw terminal. One end wouldby eci22 - General
Re: How much current ? - 9 years ago
Ah that's a great explanation, thank you very much really appreciate itby eci22 - General
How much current ? - 9 years ago
Hi I I am building a CNC machine there are two components that require AC input- the spindle and the motor power supply, both take AC power and convert into DC I want to provide the AC signal from a single IEC socket wired in parallel , it's rated for 10 amps, will powering the two components go over 10 amps and how do you calculate how much AC amps the two components will draw, this theory isby eci22 - General
Re: PLA not sticking - 9 years ago
Are you printing directly onto glass ? I dab a bit of water mixed with PVA glue (50/50) on my heatbed- once its reached temperature it looks frosty and PLA adhesion is very good. Also is your bed temperature maintained throughout the print ? It's possible to lower the bed temperature after a certain time, but this has always caused the issue you described when I've used it.by eci22 - Printing
Re: More accurate Z home sensor..? - 9 years ago
QuoteKoko76 G92 sets the position of the axis where it is, in other words G92 Z0. sets where the head is to Z0. If you use the method above and anything moves while the printer is off you have lost your position. It's generally a bad idea to rely on a printer holding position with power off, not to mention the issue of drivers only wanting to turn on with whole steps, so if your magic positionby eci22 - General
Re: High-end control boards: worth it? - 9 years ago
Quotearthurwolf Quoteeci22 I don't know about the other boards, but the ability to print over bluetooth is a great advantage for me on RAMPS. That's not specific to the RAMPS, you can essentially do that with any board. Somebody documented one of the adapters here : for use with Smoothie. But there are also adapters that will just be plug and play. All you need is a board with the serial porby eci22 - Reprappers
Re: More accurate Z home sensor..? - 9 years ago
Here's a solution to the same problem, I've removed the end stop on the Z-axis completely. 1. Find your ideal z position using the paper method. 2. Send a G92 Z0 3. Lift the nozzle some known value after each print ends, I always lift mine 30mm (G1 Z30). You can do this on the end g-code part of your slicer program 4. Create 2 macro buttons "Set Z", "Home Z" in pronterface. Every time you turn yby eci22 - General
Re: Ramps powered CNC - software advice please? - 9 years ago
I'm in a similar boat, except I will be using GRBL on an arduino to control my mill. MACH 3 is like all the arduino/RAMPS functions being performed on the PC and it simply sends stepper motor controls. Here is a good list of alternative solutions http://www.shapeoko.com/wiki/index.php/Communication_/_Control and a general overview of software for milling http://www.shapeoko.com/wiki/index.phby eci22 - General
Re: Help Choosing a Laser Cutter! - 9 years ago
Have a search for a local hacker or maker space, if you're in luck you can get access to a cutter for a small fee. There are other companies that will sell you time on a laser cutter by the hour/day this is very location dependant though. At the least you'll get experience with the machine before making/buying one.by eci22 - Laser Cutter Working Group
Re: High-end control boards: worth it? - 9 years ago
I don't know about the other boards, but the ability to print over bluetooth is a great advantage for me on RAMPS.by eci22 - Reprappers
Re: makerbot build plate? - 9 years ago
PVA glue mixed with water, dab that on with a sponge- works great for PLAby eci22 - Reprappers
Re: Where are we buying good ABS in the UK now? - 9 years ago
I use 3dFillaprint too, happy with their service and productsby eci22 - General
*Update* nearly there! - 10 years ago
Hi all, thanks for taking the time to respond, much appreciated. I made a mistake in my first post, it wasn't 60 mm/sec for speed it was 30. I slowed down a bunch of parameters and the results are much much better! 2 issues remain: 1. Theres a small gap where the M8 rod goes (see 'gap' pic) 2. There are burn marks on the PLA.(see 'burn' pics) For #2 i suspect that slowing down from 30mm/secby eci22 - Reprappers
*Nearly* solved (so close)- Whats wrong with this print ? - 10 years ago
Updated Further down the thread ----- Hi all, Im trying to print a prusa i3 Y corner and i'm having some issues as seen in the pictures. The main thing is how out of line the part is as it moves up. If anyone can give me some pointers it would be much appreciated.Thanks It is printed on its default orientation from the prusa repository. Infill:0.2 Speed: 60 First Layer height 0.2 All other laby eci22 - Reprappers
Re: Ideas for fireproof printer enclosure - 10 years ago
Wouldn't you need to test this enclosure in some way ? Would you have a printer to spare ?by eci22 - Safety & Best Practices
Re: CE Standard Certification for RepRaps - 10 years ago
I understand what goes into certification, I had to get some of the command boards on Galileo GPS certified. What I find more interesting is the situation with people selling kits, and also what exact directives repraps both as kits and as fully assembled units fall under, hence the quote from the blue book. I know its expensive but is it needed and if so which legislation.by eci22 - General
Re: CE Standard Certification for RepRaps - 10 years ago
Quotecnc dick Certification this talk is ridiculous this stuff was certified would cost 10 times more. If You want something that certified spend the 20 K and buy a professional machine. For the most part these machines don't even have electrical enclosures no thermal fuses or correct grounding. Getting something certified is a very expensive long drawn out thing I think we all appreciate that iby eci22 - General
Re: CE Standard Certification for RepRaps - 10 years ago
Here's the fuller version from the 'Blue Book' P15: "A combination of products and parts,which each comply with applicable legislation, does not always constitute a finished product that has to comply itself as a whole with a given Union harmonisation legislation40. However, in some cases, a combination of different products and parts designed or put together by the same person is considered aby eci22 - General
Re: Why JB Weld on the heatbed and cement on the extruder ? - 10 years ago
Thanks for the reply nophead, Interesting when you read the JB Weld FAQ: "Original J-B Weld can withstand a constant temperature of 500º F. The maximum temperature threshold is approximately 600º F for a short term (10 minutes). Refer to individual product packages for more temperature information." the short term seems to be 315 Celsius and constant of 260 Celsius, I guess those figures don'tby eci22 - Mendel90
Why JB Weld on the heatbed and cement on the extruder ? - 10 years ago
Hi all, Just a quick question- was there any particular reason why JB weld is used on the heatbed thermistor and cement on the extruder thermister ? Could you use JB weld for both ? or is it because of the metal expansion that epoxy is not suitable ? Thanksby eci22 - Mendel90
Re: Servo sometimes unresponsive - 10 years ago
Hi Egar, When you say you tested the servo individually, was that through the same mega ? I would try removing RAMPS. and connect the servo directly to the mega. Map the RAMPS servo pins to the mega pins and use those to perform the test. Good luck!by eci22 - Reprappers
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