d3delta3d, Yes I will be recirculating the air. I initially thought I would have extra heat and would need to dump some, but now that my heated bed is being accurately controlled I do not have extra. Good ideas, thanks. I am thinking about venting a small amount of scrubbed air so there will be lower pressure inside. This will of course vary greatly by printer design. I've been working onby Paul Wanamaker - Safety & Best Practices
Are you using Slic3r? My favorite flow rate test is here I had some prints like this too. In the Slic3r Print Settings, Advanced - Extrusion Width - the default is to have the "default extrusion width" set to 0 and it will choose an extrusion width for you. But you may want to try setting an extrusion width for some or all instead - it should be something larger than the nozzle orifice diameteby Paul Wanamaker - Printing
Excellent. Looking forward to seeing it. Edit: Note that Stratasys does use a jet of cooling air. See here about a third of the way down.by Paul Wanamaker - Reprappers
3DRapidClone, I'd like to see you succeed, I have a few worries tho... I think that a 90C chamber temp will be too high. You will run into problems as with PLA where the filament does not freeze by the time the next layer goes over it. QuoteI will be watercooling an E3DV6 hotend, 3 NEMA17s, the smoothieboard stepper drivers, and at least 2 Extruders inside of the chamber (Floating Extruderby Paul Wanamaker - Reprappers
QuoteTraumflug To some extents I'm not too happy with people effectively moving away from the wiki, placing just links into their blog here. This reduces collaboration, because external links are accessible to one person only. It also hardens the design <=> developer relationship ("This is your design"). For collaboration it'd be better to loosen this relationship, seeing developments as Reby Paul Wanamaker - General
I'm very interested in how that works out. Please let us know what model and where you got it.by Paul Wanamaker - Mechanics
Quotesheepdog43 Don't just crank down on the extruder (sorry, Paul) It can crush and ovalize the filament, causing it to bind up in the bowden, leading you to further crank it down, and making it worse... It creates a vicious cycle. Keep in mind though that this is much more common 1.75mm filament than 3mm. No worries, rather - thanks for the correction and clarification. There's a happy mediumby Paul Wanamaker - Delta Machines
In your firmware you can set the max lengths like this in Repetier: #define X_MAX_LENGTH 200 #define Y_MAX_LENGTH 200 In Slic3r you can also use a custom round or rectangular shape, or set a custom bed shape like I did by importing a STL. See attached.by Paul Wanamaker - Reprappers
Ccmain, I can't comment on the construction details as my printer is completely different, other than to say: take a look at this one, it looks similar and yours may have similar issues. With a bed that size you will need to think about what kind of filament you will be extruding, and possible shrinkage issues if you do large parts. Good luck.by Paul Wanamaker - General
IMHO, everyone who wants to 3D print goes through similar steps. (Unless they skip steps by purchasing something that's already made.) So, I think the wiki should be organized to be all about those steps. Here's my list: - Discovering the different 3d printers, types of extruders, types of hot ends, current electronics, filament, heated beds. What are their strengths and limitations? How larby Paul Wanamaker - General
Shadowphile, I went through similar issues with it when I was commissioning my printer very recently, but I am not an expert with PLA. I also used 3mm PLA when I started, since my heated bed was not ready. In the end I found my all-metal 0.5mm hotend was not suited to PLA and would jam. There is an interesting article here on extrusion rates. I don't know the nozzle size you are using. IMHOby Paul Wanamaker - Delta Machines
Looks good. I have a similar effector setup, using 12mm carbon fiber rods and high temp neodymium magnets because of a heated build chamber. I recommend getting the strongest magnets you can to start with, or under high accelerations they can disconnect. Having a very light effector will help with that. I plan on lightening mine up, and doubling the magnets in the rods (this is done by puttinby Paul Wanamaker - Delta Machines
I received both the ULPA filter and the blower fan. The filter comes in two shapes: cylindrical or rectangular, both cost about the same amount. I could not find the sizes, so I chose the cylindrical filter. It's a bit larger than I expected, I'll bet you can get quite a bit of air through it. Photos attached. Note that you need to use a pre-filter with these very fine filters. The dimensionby Paul Wanamaker - Safety & Best Practices
When you do a g0 x0 y0 z50 it is using the default feed rate you have set in firmware. You can override this like so: g0 x0 y0 z50 f100 This would use 100mm/sec for the feed rate. That would be a conservative move speed. QuoteI took a multimeter to the steppers, and got 2 coils in each (continuity between one pair of wires an an open circuit between the two pairs?) Then wired one coil to 1A1by Paul Wanamaker - General
Kealan, I'm just going to take a stab at a couple of the issues. Repetier is good stuff. I'd say stick with it. I use a display with a SD card (using a Rumba controller) so I'm not printing from the host myself. I do agree about the comments, would be better there! I think there is a way you can download the full firmware and get a commented configuration.h for reference. Note that once youby Paul Wanamaker - General
Looking good! I've been doing some testing that may be of interest to you. Tuesday I printed a test cylinder that was 1 1/2" wide and 18" tall. The first try was a failure, as the chamber temp was hot enough that the ABS filament would not freeze in place (I think the chamber was about 60C, but not measured). It made a mess of one side of the cylinder as the nozzle dragged in the still melby Paul Wanamaker - Delta Machines
I've ordered the filter from www.vacuum-direct.com for $27.80 with shipping, Ordered the 9BMB12P2K01 blower from Newark.com for $37.16 all in. The other models were out of stock where I looked. It's quite a bit louder, but I have the option to turn it way down... I ordered some granular activated carbon from Amazon for about $6.00. I will need a bit of filter media to contain the activated carbby Paul Wanamaker - Safety & Best Practices
Dust is right, JB weld has high enough temp resistance, but note: JB Quick does not.by Paul Wanamaker - General
Thank you Arthur, I think it will work fine. I have a smoothie in the cart... But I'm wondering what kind of display with SD card slot is available/supported like the Reprap Discount Smart LCD controller? I want to be able to run it off an SD card. What I'd really like is a SmoothiePanel.by Paul Wanamaker - General
Thanks Arthur. Good to know. I'm really looking forward to the a smoothie type controller after I do a few other changes. I just had to re-flash the USB chip for a second time on my Rumba, and I have problems with the processor being too slow, so I'm over it... I would really rather buy a smoothie except that I want the higher voltage drivers in the Azteeg x5.by Paul Wanamaker - General
Has it printed OK before? If so, there may be a clog in the hot end. Have you calibrated the flow rate?by Paul Wanamaker - Reprappers
Hmmm.. So you can push filament by hand through the bowden tube and it never hangs up that way? BTW, .4mm is not small, that should not be a factor. Can you upload a video of it when it's grinding?by Paul Wanamaker - Reprappers
mk3a, I ran into all kinds of issues with my extruder and hot end (since I designed and built both). A few thoughts. Check the extruder drive gear, does it have filament swarf stuck in the teeth? "Grinding" sound does not sound like the driver is doing a thermal reset. If it was you could pull on the filament lightly when that happened and it would pull out. Put marks on the filament with a penby Paul Wanamaker - Reprappers
Thanks! I had never heard of cuttlefish bone, or as insulation. Fascinating. I'll be following your progress.by Paul Wanamaker - Look what I made!
Jai, I'm considering upgrading to the Azteeg x5 myself which is a Smothie derivative, and uses the smoothie firmware, as it has the drivers I want that use higher voltage. From what I've read, I think the ease of settings will be at least as good, as well as the features. You are supposed to be able to install new firmware by just putting it on memory card. Those that have it could comment froby Paul Wanamaker - Delta Machines
Nick - I would be very happy to take a look at it. Are you planning to build a prototype? Would you mind publishing a link to it here after you've completed your project? I think this is a critical issue and really want all the info out. Having watched some of the videos of what has been created for existing printers - I now see the need for setup with a higher volume airflow to retrofit thby Paul Wanamaker - Safety & Best Practices
Very nicely done! Can you show a photo of the print head arrangement?by Paul Wanamaker - Look what I made!
There is a Laser Cutter Working Group hereby Paul Wanamaker - Reprappers
Re "Are we over-designing this" Now that we understand the issue, sure MDF and duct tape would work fine. Go for it. I have to design something that will work with my printer, as it is already tall, and has to fit through the door. Edit: I found the following more compact ULPA filter ORK-ULPACAS-09 for $16.25 plus shipping. More expensive other places. It looks like vacuum exhaust filters aby Paul Wanamaker - Safety & Best Practices
Excellent. Recirculating will increase the capture. I have to balance that with the need to be able to dump some heat tho. I think we've covered the bases. I'll do some more searching to see if I can find a smaller and cheaper ULPA filter that the one I found above, a smaller carbon filter, and a quieter blower, perhaps 12v. I like blowers as they typically have a better static pressure curby Paul Wanamaker - Safety & Best Practices