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People building or using RepRaps.
Re: Frustrating extrusion problem - 14 years ago
I've never been able to use RepRap Host with my Gen6, perhaps there is a newer version that handles the echo's now. Anywho, the bit of interest appears to be at the end of the first layer, it requests an extruder retraction: G1 E2568.5 the previous command using the extruder put it at: G1 X67.5 Y30.7 E2588.5 F1500.0 ;horizontal move So it looks like it is requesting the extruder to retractby jim_blag - General
Re: Frustrating extrusion problem - 14 years ago
Can't say I've ever seen this. It's probably more likely to be related to the GCode you've created. Can you indicate which electronics and firmware version and which tool-chain you are using to convert the STL. Also, post the GCode you are having problems with, it might be useful to see what's going on. JBby jim_blag - General
Re: Gen 6 power problem - 14 years ago
Nope, nothing plugged in and certainly not on. You want a multi-meter set to resistance (not voltage) for this measurement. The heater block has a 6-ohm resistor in it that heats up to warm the block, if you measure across the terminals with the multi-meter, you should measure the resistance of this resistor. If you don't see around 6-ohms, something is wrong. The heater block should also haveby jim_blag - General
Re: Gen 6 power problem - 14 years ago
What type of hot-end do you have? Heater block? Or, nichrome wire-wound around nozzle? Two quick tests I would suggest, unplug the heater. Measure the resistance across the heater terminals on the heater plug. It should be somewhere between 6 or 7 ohms. Also, measure the resistance across the thermistor terminals. It should be around 180k-ohms (depending on thermistor and current temperature).by jim_blag - General
Re: Blobbing due to small pauses. [help me] - 14 years ago
I've seen similar things with my Gen6 at the start of a thread. I've watched the communication log and the pauses (and hence the blobs) always seem to coincide with a communication error. I suspect that the processor is running out of oomph at a critical moment, like during retraction or a Z-Move and misses a command. The delay for the resend causes the small pause and the blob. I haven't reallyby jim_blag - General Mendel Topics
Re: Gen 6 power problem - 14 years ago
Sounds like the regulators are brown-ing out and reseting continuously. Do you have an obvious short in your system somewhere? Trying unplugging all your connectors then powering it up and seeing if it still happens. Then plug each one back in turn (with the power-off) and see if it starts blinking again, that might indicate where the problem lies. JBby jim_blag - General
Re: Start code & end code - 14 years ago
Try adding this: G92 E0 ; reset extruder length G1 X6 F1000 E20 ; move bit out of X0 while extruding G92 E0 ; reset extruder length JBby jim_blag - Skeinforge
Re: Start code & end code - 14 years ago
It's essentially hitting the key at the end of the line, but it can vary by OS slightly. The best way to be sure is to copy a line from the existing file, paste it, then edit the text to reflect your required GCode. JBby jim_blag - Skeinforge
Re: Start code & end code - 14 years ago
Looking through the code in Skeinforge where it adds in the ending code it doesn't really do anything specific other than grab the contents of the file and append it to the GCode. One thing to double check is that you have a at the end of the line in question. When it grabs the contents of the file it does the following modification: textLines = text.replace('\r', '\n').replace('\n\n', '\n').by jim_blag - Skeinforge
Re: LOOOONG Pauses (Stops) in prints. - 14 years ago
I've seen this a couple of times with my Gen6. I have one piece where it happens consistently in the same spot (even after re-slicing with different settings). After about a minute it begins printing again. There was nothing interesting about the GCode at that point it stopped, it was a series of G1 moves.I thought the firmware had crashed as it wouldn't respond to unbuffered GCodes during this tby jim_blag - General
Re: Extruder Stepper In and Out - 14 years ago
Look in the 'Dimension' tab. See what you have 'Extruder Retraction Speed', 'Retraction Distance' and 'Restart Extra Distance' set to. For the moment try setting 'Retraction Distance' and 'Restart Extra Distance' to zero to switch off retraction and see if that helps. You'll probably want to configure these settings to something sensible at some point to avoid oozing problems. James -- Blog:by jim_blag - Skeinforge
Re: Start code & end code - 14 years ago
The GCode itself looks good to me. This could be a typo error, but I'm assuming you cut and paste this - the last line in your 'end' file where you set your extruder temp to switch off the heater, you have an 'O' and not a '0'. I'm not sure if this is what's causing your tool-chain to barf? JBby jim_blag - Skeinforge
Re: Who are you people? - 14 years ago
Electronics Engineer with a keen interest in robotics. Open source is a key reason I chose to build a RepRap and tinker, vs. buying a Cupcake. Regards, James -- Blog: AdventuresIn3-DPrintingby jim_blag - General
M117 GCode - 14 years ago
I'm trying to insert the M117 GCode into the version of FW that runs on my Gen6 electronics. The default version of firmware for Gen6 doesn't support this GCode. Looking at the current firmware release it appears to be a fairly straightforward command to add, and I have the unit responding with values when requested. But can someone confirm for me how M117 is supposed to operate. From the detaiby jim_blag - Reprappers
Re: Skeinforge Settings Archive Utility - 14 years ago
My alterations directory is still in the '~/.skeinforge' directory, although I do see one in the application directory - but it is still using the settings from the '~/.skeinforge' directory. It must be a hangover from an old install. I'll have a think about how to handle the two different locations. At the moment the application is pretty simple (~15-mins work) and hence dumb. I guess if youby jim_blag - Skeinforge
Skeinforge Settings Archive Utility - 14 years ago
I've written a simple application to archive and restore the settings for Skeinforge. I can never remember what settings I've 'tweaked' from my optimal settings, this utility allows me to quickly and easily save a specific configuration and then restore it at later date. I figured others might find it useful too. Details are here: SkeinArchiver Happy Printing. James Blog: AdventuresIn3D-Printby jim_blag - Skeinforge
Re: Generation 6 start up - 14 years ago
The buzzing is normal. It's the chopper frequency of the stepper drivers, it just happens to be in the audible range unfortunately. I haven't found a way to change it without replacing components on the PCB, and I can't be bothered to do that just yet. When it's printing it doesn't do that, only when it's relatively stationary. As for your error message, it's basically a comm's error to the boarby jim_blag - Reprappers
Re: PLA, ABS Filament Supplier in USA?? - 14 years ago
I can recommend Ultimachine too. I ordered two reels of PLA from them, it really was in stock and arrived within a few days. It also came with samples of two different colors for free. I'd definately order from them again. JBby jim_blag - Reprappers
Re: Calilfornia Reprappers sound off - 14 years ago
Mendel owner in Los Gatos.by jim_blag - California, San Francisco Bay Area RUG
Re: Building a mendel - 14 years ago
Which hot-end and extruder are you using? 185c is too low on my Mendel for PLA. With a nichrome wire-wound hot-end I have to be up around 200-205c to get PLA extruding nicely. With a block style hot-end I find that 220c is required because the thermistor is measuring the temperature of the block, not the nichrome wire. Regards, James Check out my blog.by jim_blag - Reprappers
Re: software melting extruder - 14 years ago
Can you post the GCode you were trying to print. It might indicate what was going wrong. What version of electronics are you using? I've had problems in the past with Skeinforge inserting GCode's that aren't necessary for my stepper based extruder and it causes things to pause. Regards, James -- Check out my 3D Printing Adventuresby jim_blag - Reprappers
New Mendel in NorCal - 15 years ago
I've just finished building my first Mendel, which I thoroughly enjoyed. There is a lot of useful information available, spread over numerous sources that I found helpful during my build. In order to give something back I've decided to start blogging my personal findings and tips on tuning and tweaking the various parameters needed to get good builds. I've still got a long way to go before everytby jim_blag - Reprappers