Having just got into 3D printing myself I would suggest it is not yet a plug and play experience yet. Although the printer I got was very definitely a DIY project requiring assembly etc. the groups I am following also suggests to me that quality is very definitely an acquired skill that comes through experience. I had thought of volunteering my printers to complete the process for this project but I am not certain that my printing is up to the quality standards and as such I am not sure that I would want the stress of trying to turning out a product that I may not be experienced enough to do. I would think the only way to do a crowd source printing would require getting sample prints from each participant for evaluation. A process that would be quite time consuming I think. One mans' opinion.
On Thu, Apr 27, 2017 at 9:16 AM Adam Van Ymeren <a...@vany.ca> wrote: > On April 27, 2017 9:23:40 AM EDT, Luke Kenneth Casson Leighton < > l...@lkcl.net> wrote: > >On Thu, Apr 27, 2017 at 1:00 PM, Christian Kellermann > ><ck...@pestilenz.org> wrote: > > > >> As the current issue is time in producing them I would also scratch > >> the printed parts order myself, maybe in exchange for a discount on > >> future designs done by Luke and print them myself. People with access > >> to a maker lab could consider doing the same... > >> > >> I am not capable to promise good quality printing for 3rd parties as > >I > >> have been starting getting into this for a rather short while now... > > > > well, a 200x200 basic reprap will do the job, with a 0.4mm nozzle and > >a layer height of between 0.15 and 0.2mm is absolutely fine. it's not > >hugely difficult. i've just ordered this ($140!!) 3D printer from a > >taobao seller, it's arriving in a couple of days: > > > > https://world.taobao.com/item/526287577504.htm > > Here's a thought, if you're okay running a fleet of printers, what if we > crowd funded a fleet of 3d printers, whereby people pay for printers, you > do a bulk order of printers, use them to print the parts and then > distribute the printers to backers. Sort of like a promotional thing, you > can receive one of the printers that was used to make your laptop. > > > > >now, at $140 i am quite happy to get up to 10 of those (if the first > >one checks out fine) - it looks *really* sturdy: 20x20 aluminium > >box-section: my only concern about rigidity being that it uses > >L-brackets which go *into* the frame rather than triangle-corners > >which are bolted outside and lock the box-section absolutely solid. > >but, we'll see what happens. > > > > also it looks like it has a clone of the E3Dv6 hot-end (which is > >really good), it has trapezoidal z-axis lead screws with proper brass > >nuts, borosilicate glass plate (to be confirmed). > > > > the one thing i have told the guy (and he's happy to give a RMB 70 > >discount): i do NOT want the f*****-s***-for-brains RAMPS 1.4 > >controller. if you're familiar with 3D printing for f***'s sake STAY > >AWAY from ANYTHING that uses the brain-dead "Polulu" driver "modules". > >RAMPS, RUMBA, Lerdge, Megatronics - just don't f*****g well do it. > > > > the reason is really really simple: those QFN ICs are designed > >SPECIFICALLY, as outlined CLEARLY IN THE DATASHEET, for the heat to be > >dissipated THROUGH THE PCB. there is a ceramic insulator on the TOP > >OF THE CHIP which ACTIVELY PREVENTS HEAT DISSIPATING THROUGH THE TOP. > >if you put a heat sink on top of the chip it does... nothing. > > > > now, when the first reprap was created, in order to save time and > >development cost they bought some PROTOTYPING boards with the stepper > >drivers pre-mounted, which came with SPECIFIC instructions "under no > >circumstances use these in production". > > > > so what happens? > > > > well, they (a) burn out (b) overheat (c) stop working for a couple of > >seconds at a time in the middle of a print... > > > > ... you get the general idea. > > > >so anyway i ordered a Melzi 2.0 from here: > > > >https://www.aliexpress.com/store/group/Melzi-board/1757194_500507171.html > > > >and it turns out that on the reprap wiki there's a mod to them which > >allows for the connection of a BT UART. it would have been handy if > >those pins had been brought out on a header but hey, what's wrong with > >a bit of soldering. > > > >if you don't want to do soldering then you can just put the Melzi 2.0 > >into "auto-load" mode, drop a file in a FAT32 filesystem on a MicroSD > >card and power it up. > > > >i like the Melzi 2. it's simple, relatively low-cost compared to some > >of the other options, no-nonsense and straightforward. > > > >l. > > > >_______________________________________________ > >arm-netbook mailing list arm-netbook@lists.phcomp.co.uk > >http://lists.phcomp.co.uk/mailman/listinfo/arm-netbook > >Send large attachments to arm-netb...@files.phcomp.co.uk > > > _______________________________________________ > arm-netbook mailing list arm-netbook@lists.phcomp.co.uk > http://lists.phcomp.co.uk/mailman/listinfo/arm-netbook > Send large attachments to arm-netb...@files.phcomp.co.uk
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