Re: Unusual stepper ratings - vref settings for new Melzi
You might also want to put the extruder a bit closer to the printing surface. It depends on the size of the nozzle, but surely 1mm is too much. Actually, the "correct" distance for the nozzle is such,...
View ArticleRe: Unusual stepper ratings - vref settings for new Melzi
Thanks - I haven't measured it as 1mm but I'd guess it's around that, maybe a touch less. I've read different things about the height - some saying a piece of paper, others saying thickness of a...
View ArticleRe: Unusual stepper ratings - vref settings for new Melzi
Beware the temperatures indicated by the sender are some estimations based on the thermistor table calculations. There is no zero or no other absolute reference in it, so if the tables have errors...
View ArticleRe: DIY Power Supply?
MacSkyver, what did you use to draw that schematic? It looks professional. Thanks for the regulation circuit idea. I plan to look into that next. I've been reading about voltage and amperage needs....
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Re: Unusual stepper ratings - vref settings for new Melzi
Thanks for the suggestions - I've got an infrared temperature gun thing and I know the bed heats around 15-20C lower than it states on screen. It's harder to gauge with the extruder. I printed this...
View ArticleRe: Unusual stepper ratings - vref settings for new Melzi
If there are any extruder jam, that can be dangerous if its hardware related. Maybe the diameter of the filament path is too tight and when filament gets hotter its dilatation presses against the...
View ArticleRe: Unusual stepper ratings - vref settings for new Melzi
Ok thanks. I've had the extruder apart many times but not examined down inside the hot end I must admit. I've tried what you suggested and the filament is hard to push through. Strangely it seemed...
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Re: Unusual stepper ratings - vref settings for new Melzi
By the way, this is how I attached the hot end after finding i couldnt bolt it like it previously was: 37C5FEBC-163B-4AC4-9FBB-56893281562B_zps0qr33j4t.jpg 6mm ply then i chamfered the edges to...
View ArticleRe: DIY Power Supply?
The program I used to draw the schematic is Kicad. It is free and open source. I highly recommend it. It's hard to say if the arduino voltage regulator would fry if hooked to an unloaded 12V...
View ArticleRe: Unusual stepper ratings - vref settings for new Melzi
Yes that the upper picture seems like leaking? I see plastic coming from the upper part of the block down to the bottom part also covering the nozzle. As it comes from there its probably leaking...
View ArticleRe: Unusual stepper ratings - vref settings for new Melzi
Thanks for the suggestions. I think I mentioned the leak earlier but possibly I just meant to and didn't actually write it. I haven't read back through it and I'm sligjhtly demoralised right now. My...
View ArticleRe: Unusual stepper ratings - vref settings for new Melzi
Hi Mr Joshua, I'm very sorry to read about your extruder. This 3D printing business can get very annoying :( Reading again carefully through all the posts, I believe I might have found some...
View ArticleRe: Unusual stepper ratings - vref settings for new Melzi
If you've got a 0.5mm or larger nozzle, a good thing to use when changing between ABS and PLA is Laywoo-D3 wood particle filament. I wouldn't try Laywoo-D3 in anything smaller than 0.5mm though -...
View ArticleNeed some help for the cables.
Dear friends! It's Bobby here. I'm living in Bulgaria and I'm a mechanical engineer (bach and master degrees in Automation and Robotics) and now I'm studying PhD degree in Machine Elements. I'm...
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Re: Unusual stepper ratings - vref settings for new Melzi
Thanks guys - haven't fully read those 2 posts as I'm just doing something but will come back to them later on. Here's a pic of the carnage though for now :(...
View ArticleRe: RAMPS for Due!
Hi bobc : Now I am trying to make the lcd worked on RAMPS-FD , I have make some PCB which you design in your github , I have soiled ,I change 74HC07 to 74LS07 .is it OK to do that ? NOW MY LCD (smart...
View ArticleRe: RAMPS for Due!
Quotecdsteinkuehler QuoteJNOD I have a quick question though, I looked at your stuff on GitHub and you have .brd files but they don't open in eagle. What software do you need to view your files? I am...
View ArticleRe: RAMPS for Due!
Quotesakunamary GOOOOOOD JOB！！！cdsteinkuehler ， but I do not know about the BBB...... raspberry , PCduino .BBB ,i can't tell which is better.... Well, for machine control I would say the BBB is best:...
View ArticleRe: DIY Power Supply?
The ATX power supply is a good thing to use not only because they are cheap, easy to find and you can often get one from an old PC for free. But when using the RAMPS, if you hooked it up properly, the...
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