After 7 PM? SGT Gabe Cottrell <bmrf@xxxxxxxxxxx> wrote: >One of the guys I worked with at RMU Charles Mura will bring his MendalMax >to the shop on tuesday for openhardware. To give us a idea. > >-Gabe > >On Sun, Jun 10, 2012 at 6:46 PM, Jeremy Herrman <jeremy@xxxxxxxxxxxx> wrote: > >> I'm all for building the MendelMax. Extruded aluminum beams are great, and >> if the printed joints prove to be a problem then we can either print new >> ones when they start to wear down, or make them out of some other material >> and then tell the community about it. >> >> - Jeremy >> >> >> On Sunday, June 10, 2012, j. eric townsend wrote: >> >>> How did he print the joints? We had a lot of 3d printer access on campus >>> and it'd be a big help if he printed there. >>> >>> The drawback to all of the metal strut + printed plastic joints (in my >>> opinion, mind you) is alignment and stability. I haven't seen many (5?) >>> but almost all of them were wobbly due to wear in the joints or poorly >>> printed joints. >>> >>> If I'm going to drag it around, I want it to be rugged, and I realize >>> that isn't high on the requirements lists for many of these. >>> >>> It's tempting to just cut all the joints out of metal or acrylic. That, >>> or cut one out of wood, which was good enough for Cupcake CNC plans. >>> >>> >>> >>> On 6/10/12 13:34, Gabe Cottrell wrote: >>> >>>> One of my coworkers from RMU Charles Mura, just built a MendelMax, and >>>> its print quality is great and it is rigid as hell, I think he's >>>> planning on bringing it to mini-makerfair. >>>> I'll see if he can bring it by the shop for a demo. >>>> >>>> -Gabe >>>> >>>> On Sun, Jun 10, 2012 at 12:54 PM, Matt Stultz <matt@xxxxxxxxxxxxxxxxxx >>>> <mailto:matt@xxxxxxxxxxxxxxxxxx>> wrote: >>>> >>>> Okay I will keep my ranting to a minimum but there are a few points >>>> I can't help but make: >>>> >>>> 1 Non one is working on PLA extruders for MakerBot's anymore because >>>> the extruders MakerBot makes work awesome for PLA. >>>> >>>> 2 Comparing the pint quality of your first generation Cupcake to >>>> MakerGear's finely tuned sales tool demo unit is pretty absurd. >>>> >>>> 3 Many in the reprap comunity hate MakerGear because he steals their >>>> work and calls it his own (see the "MakerGear Prusa" >>>> >>>> http://www.makergear.com/**products/3d-printers<http://www.makergear.com/products/3d-printers> >>>> ) >>>> >>>> Okay Rant over. >>>> >>>> Now from the perspective of owning 2 MakerBot's (a Cupcake and a >>>> Replicator) and being at the point of about to build my 3rd 3D >>>> printer >>>> (http://reprap.org/wiki/**Tantillus<http://reprap.org/wiki/Tantillus> >>>> ). >>>> >>>> Build a MendelMax! >>>> http://www.thingiverse.com/**thing:20355<http://www.thingiverse.com/thing:20355> >>>> >>>> It's a little more expensive than a Prusa but has the same print >>>> capabilities and is easier to build and far more rigid than a Prusa. >>>> You can print in both ABS and PLA with this bot (there are upsides >>>> and downsides to both). Most importantly it's a "kit" that members >>>> of the shop can put together and learn how these systems work which >>>> will make it much easier when you have to do repairs on it. That is >>>> important because it's not an if it's a when. >>>> >>>> I will probably end up building one of these myself at some point if >>>> for no other reason than the large build size. >>>> >>>> If you don't want to build a Max then just build a standard Prusa. >>>> It has the greatest level of community support and upgrade parts for >>>> it. >>>> >>>> If you want to build a Max or a Prusa (or something else reasonable) >>>> for HackPGH let me know and I will print the parts needed for it on >>>> my Replicator and send them to the shop. >>>> >>>> Thanks, >>>> Matt >>>> >>>> On Sat, Jun 9, 2012 at 2:52 PM, j. eric townsend <jet@xxxxxxxxxxxx >>>> <mailto:jet@xxxxxxxxxxxx>> wrote: >>>> >>>> Reprap, MakerBot, and most of the open printers can do ABS or >>>> PLA. You just have to tweak some hardware, the temperature >>>> settings in the controller, and change the g-code generation >>>> scripts. >>>> >>>> Early on there were a lot of people making alternate PLA heads >>>> for the MakerBot but they are starting to work more on Reprap >>>> these days. >>>> >>>> There are some other commercial-ish 3d printers out there that >>>> are cheap and available as kits, parts-lists, etc. The M Series >>>> printers from MakerGear print PLA really well, last year I was >>>> next to one at the maker faire and his PLA looked better than my >>>> Cupcake's ABS. He was making jewelry he could give to kids with >>>> no nasty fumes. >>>> >>>> I'm putting together a spreadsheet now of the basic >>>> models/prices for my own reference, will bring that on Tue. >>>> >>>> >>>> >>>> On 6/9/12 14:19, The Gentleman Alchemist wrote: >>>> >>>> I agree with RepRap over in MakerBot in principle and in >>>> practicality. >>>> >>>> If I understand correctly, RepRap would most likely be a ABS >>>> plastic >>>> printer. What would be our options for a PLA printer? >>>> >>>> Scott^2 >>>> >>>> On Sat, Jun 9, 2012 at 12:26 PM, j. eric townsend >>>> <jet@xxxxxxxxxxxx <mailto:jet@xxxxxxxxxxxx> >>>> <mailto:jet@xxxxxxxxxxxx <mailto:jet@xxxxxxxxxxxx>>> wrote: >>>> >>>> Tuesday, 7:30pm, free, open to the public. >>>> >>>> Topic: What should be the next 3D printer one of us >>>> builds? >>>> MakerBot isn't supporting older models with parts >>>> online so I'm >>>> leaning towards a Reprap, but what sort of PLA printer >>>> should we >>>> consider for the shop or for a class? >>>> >>>> -- >>>> J. Eric Townsend >>>> design: www.allartburns.org <http://www.allartburns.org> >>>> <http://www.allartburns.org>; hacking: >>>> www.flatline.net <http://www.flatline.net> >>>> <http://www.flatline.net>; HF: KG6ZVQ >>>> >>>> PGP: 0xD0D8C2E8 AC9B 0A23 C61A 1B4A 27C5 F799 A681 3C11 >>>> D0D8 C2E8 >>>> >>>> >>>> >>>> >>>> -- >>>> J. Eric Townsend >>>> design: www.allartburns.org <http://www.allartburns.org>; >>>> hacking: www.flatline.net <http://www.flatline.net>; HF: KG6ZVQ >>>> PGP: 0xD0D8C2E8 AC9B 0A23 C61A 1B4A 27C5 F799 A681 3C11 D0D8 C2E8 >>>> >>>> >>>> >>>> >>> >>> -- >>> J. Eric Townsend >>> design: www.allartburns.org; hacking: www.flatline.net; HF: KG6ZVQ >>> PGP: 0xD0D8C2E8 AC9B 0A23 C61A 1B4A 27C5 F799 A681 3C11 D0D8 C2E8 >>> >>> >> >> -- >> 717-497-9253 >> @jherrm <http://twitter.com/jherrm> >> linkedin.com/in/jherrm >> facebook.com/herrman >> >> >> >>