tag:blogger.com,1999:blog-8639215628525378898.post8054909907761953394..comments2023-09-20T15:32:40.483+01:00Comments on Reprap development and further adventures in DIY 3D printing: Indestructamendel - Polycarbonate 3D Printing with Prusa MendelRichRap3Dhttp://www.blogger.com/profile/09348596756294999378noreply@blogger.comBlogger29125tag:blogger.com,1999:blog-8639215628525378898.post-30613635670207265982014-02-15T10:50:17.520+00:002014-02-15T10:50:17.520+00:00I read your blog is so good having good informatio...I read your blog is so good having good information. about the<a href="http://www.srisairubberproducts.com/products.html" rel="nofollow"> Leak Testing Rubber Products Manufacturers in India</a><br />we are the best Leak Testing Rubber Products Manufacturers.just visit our siteAnonymoushttps://www.blogger.com/profile/06730711192778525186noreply@blogger.comtag:blogger.com,1999:blog-8639215628525378898.post-43994001171784424312013-10-28T10:33:24.377+00:002013-10-28T10:33:24.377+00:00Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8639215628525378898.post-37742722858575111552013-08-16T11:14:27.168+01:002013-08-16T11:14:27.168+01:00The general benefits of a lexan polycarbonate shee...The general benefits of a lexan polycarbonate sheet is resistance to UV, high impact strength, the weight of a sheet is approximately 15% to that of double pane glass, easily goes along with major model building codes, and transmits most of the visible light.<br /><br /><a href="http://www.sriramanaenterprises.com" rel="nofollow">Lexan Multiwall Sheet</a><br /><a href="http://www.sriramanaenterprises.com/lexan_thermoclick_multiwall_sheet.php" rel="nofollow">Lexan thermoclick multiwall sheet</a><br /><a href="http://www.sriramanaenterprises.com/polycarbonate_embossed_sheet.php" rel="nofollow">Polycarbonate Embossed Sheet</a><br /><a href="http://www.sriramanaenterprises.com/lexan_polycarbonate_sheet.php" rel="nofollow">polycarbonate sheet in Chennai</a><br /><a href="http://www.sriramanaenterprises.com/lexan_polycarbonate_sheet.php" rel="nofollow">Polycarbonate Sheet distributors</a><br /><a href="http://www.sriramanaenterprises.com/lexan_corrugated_sheet.php" rel="nofollow">Lexan Corrugated Sheet</a><br /><a href="http://www.sriramanaenterprises.com/lexan_corrugated_sheet.php" rel="nofollow">Polycarbonate Corrugated Sheet distributor</a><br /><a href="http://www.sriramanaenterprises.com/galvalume_roofing_sheets.php" rel="nofollow">galvalume roofing sheets</a><br /><a href="http://www.sriramanaenterprises.com/roof_ventilator.php" rel="nofollow">Roof Ventilator in chennai</a><br /><a href="http://www.sriramanaenterprises.com/galvalume_roofing_sheets.php" rel="nofollow">Bare Galvalume Sheets</a><br />Anonymoushttps://www.blogger.com/profile/08812579900849603836noreply@blogger.comtag:blogger.com,1999:blog-8639215628525378898.post-83174629882229372502013-07-26T09:54:05.068+01:002013-07-26T09:54:05.068+01:00The Lexan Polycarbonate sheets are in particular u...The <a rel="nofollow">Lexan Polycarbonate sheets</a> are in particular used as roofing sheet as they have splendid thermal as well as heat resistant properties which is particularly required for roofing sheets.Anonymoushttps://www.blogger.com/profile/08812579900849603836noreply@blogger.comtag:blogger.com,1999:blog-8639215628525378898.post-84299345544819184992012-06-06T07:42:08.421+01:002012-06-06T07:42:08.421+01:00Hi, It was based on a V5 Mendel-Parts body but wit...Hi, It was based on a V5 Mendel-Parts body but with a resistor heating block similar to this - http://richrap.blogspot.co.uk/2011/08/high-power-hot-end-for-fast-printing.html the Peek insulator was force cooled using a fan, and each print was only done for a short period of time then allowed to cool.RichRap3Dhttps://www.blogger.com/profile/09348596756294999378noreply@blogger.comtag:blogger.com,1999:blog-8639215628525378898.post-62120335970282717102012-06-05T11:51:21.544+01:002012-06-05T11:51:21.544+01:00Hi RichRap, your test look promising. Can you shar...Hi RichRap, your test look promising. Can you share your hotend design for those high temperatures?droetkerhttps://www.blogger.com/profile/01251739538941090817noreply@blogger.comtag:blogger.com,1999:blog-8639215628525378898.post-6559503435080091412011-11-23T01:18:56.474+00:002011-11-23T01:18:56.474+00:00are you going to be getting/supplying this materia...are you going to be getting/supplying this material in the future?fritzguttenhttps://www.blogger.com/profile/18025718351194458324noreply@blogger.comtag:blogger.com,1999:blog-8639215628525378898.post-10880481861431597172011-11-07T09:49:02.754+00:002011-11-07T09:49:02.754+00:00Hi fritzgutten - I agree with you, moisture does n...Hi fritzgutten - I agree with you, moisture does not seem to be the issue, it's a change of state. Very hot high pressure injection moulding does not have this issue, I'm convinced the fused filament fabrication process causes the effect, not a big problem and it does not seem to make much of a difference to the strength.RichRap3Dhttps://www.blogger.com/profile/09348596756294999378noreply@blogger.comtag:blogger.com,1999:blog-8639215628525378898.post-46596683014966213602011-11-04T04:06:15.756+00:002011-11-04T04:06:15.756+00:00I'm not sure your problem is moisture related,...I'm not sure your problem is moisture related, as your test extrusion was clear, although PC can absorb a lot of it, i would tend to think that it has more to do with the number of filament interfaces in the printed model. perhaps try a wipe down or quick soak in some thin weld-on plastic solvent and see if that helps any, but i would suspect that it is the internal (to the object) interfaces that cause the whitening. try looking at your model under some magnification to look for moisture bubbles.fritzguttenhttps://www.blogger.com/profile/18025718351194458324noreply@blogger.comtag:blogger.com,1999:blog-8639215628525378898.post-11217563650759360492011-11-03T10:03:57.698+00:002011-11-03T10:03:57.698+00:00Hi Leo - I'm please you like the blog, I'm...Hi Leo - I'm please you like the blog, I'm going to put that to the test shortly, I have my last 150grams of the test batch Pure PC drying in desiccant for some time, if that shows improvement I may try oven drying further. But I'm still not sure moisture is the issue or if it's just a change in states of the plastic due to the extrusion method. <br /><br />The PC-ABS batch was not as successful as expected, it's actually harder to use than pure PC, the lower extrusion temperature is not actually an advantage and makes the filament more tricky to use than ABS. I would not recommend PC-ABS for 3D printing.<br /><br />I have not yet investigated PET as a filament, I imagined it may have warping issues and must have a similar high extrusion temperature to PC.<br />Filled materials is another really interesting area for investigation, carbon loaded, glass filled.RichRap3Dhttps://www.blogger.com/profile/09348596756294999378noreply@blogger.comtag:blogger.com,1999:blog-8639215628525378898.post-45126169135341800652011-11-03T09:44:28.509+00:002011-11-03T09:44:28.509+00:00Hi 4ndy - I'll try to get back to PC testing s...Hi 4ndy - I'll try to get back to PC testing soon. A few other people in the world have printed with some samples I sent out of my test batch, these include both bowden extrusion and two Makerbot MK7 extruders, all have been a success.<br />Some have reported issues with sticking, but I didn't have any such problems with my PET/Kapton, PCB bed at only 85 degrees C, so maybe that needs a little further investigation.<br /><br />I like the thin-walled tube idea, I did make an experimental extruder along these lines with a 6mm Stainless tube and a 4mm/2mm PTFE tube insert, that worked well but I want to remove all PTFE for future materials.<br />I didn't have any real issues with the filament buckle, as long a skeinforge knows the correct diameter then the extruded volume is correct, the smaller filament size may have even been an advantage as NYCdesigner managed to extrude some of the test batch at around 250 degrees C with an MK7, I'm not sure if you could do that if it was a much larger filament size. Again more things to test. - Check out his Indestructible mini Nuke print in Pure PC - http://www.thingiverse.com/derivative:15123RichRap3Dhttps://www.blogger.com/profile/09348596756294999378noreply@blogger.comtag:blogger.com,1999:blog-8639215628525378898.post-52182289363061261322011-11-03T00:10:01.796+00:002011-11-03T00:10:01.796+00:00Hi Rich, I've found your blog, and it's a ...Hi Rich, I've found your blog, and it's a goldmine.<br /><br />PC absorbs a relatively large amount of water from the air (more than Acrylic, for example). When it's melted, the water boils, and the PC goes white because it is blown into a very high denstity 'foam' by the small bubbles of steam.<br /><br />To avoid whitening (and some weakening) it needs to be dried. Baking at 125C for a few hours is common (time required depends on the humidity and thickness of the PC).<br /><br />I'd be very interested in helping with materials experiments. I studied some materials science at university, and I've been soaking up relevant info ever since, too. <br /><br />I'm especially interested in PET and filled grades of various plastics. The PET because it's got excellent mechanical properties and low water absorption, and the filled grades because fillers give much more freedom to engineer the material properties.Leo Deardenhttps://www.blogger.com/profile/04947654308614394044noreply@blogger.comtag:blogger.com,1999:blog-8639215628525378898.post-78599127227255929032011-10-22T16:21:24.036+01:002011-10-22T16:21:24.036+01:00Been waiting to see some more tests on PC for so l...Been waiting to see some more tests on PC for so long :D<br />Do you think you could use a thin-walled tube (think juicebox-straw ratio) of PTFE down your extruder barrel to prevent the smaller filament from buckling? I wonder if you could even adapt a 3mm extruder to use the same filament in that way with a slightly thicker tube.<br /><br />Next on thingiverse: printable helmet and cricket cup/box.4ndyhttps://www.blogger.com/profile/08675315515117082792noreply@blogger.comtag:blogger.com,1999:blog-8639215628525378898.post-8381436480066168372011-10-09T20:01:55.015+01:002011-10-09T20:01:55.015+01:00Hi Ged,
Thanks, and yes, adding heat of any sort s...Hi Ged,<br />Thanks, and yes, adding heat of any sort seems to help with PC, I'm planning on giving it another print session when I swap my 1.75mm extruder back onto my machine.<br />I fancy making an entire Prusa Mendel out of PC just to see how long it lasts.<br /><br />Good luck with your own Prusa build, let me know if you get stuck.<br /><br />Cheers,<br /><br />Rich.RichRap3Dhttps://www.blogger.com/profile/09348596756294999378noreply@blogger.comtag:blogger.com,1999:blog-8639215628525378898.post-88917449697883579262011-10-09T17:40:30.631+01:002011-10-09T17:40:30.631+01:00Hi Rich,
Love your pioneering work with PC (and th...Hi Rich,<br />Love your pioneering work with PC (and the rest)have you tried using a hair dryer or other similar heat gun to help the PC settle into clear as you extrude? I've got a sneaky feeling that the temp differential may be causing the fast crystalization.<br /><br />I'm in the process of building my first Prusa and to say I'm excited by what you're doing is an understatement.<br />Cheers,<br /> GedGedhttps://www.blogger.com/profile/00730409211388260888noreply@blogger.comtag:blogger.com,1999:blog-8639215628525378898.post-55441169466665135502011-10-05T08:46:23.917+01:002011-10-05T08:46:23.917+01:00Hi Tom,
Cool, it will be interesting to see what s...Hi Tom,<br />Cool, it will be interesting to see what speeds you can print with at 3mm feedstock.<br />PC is expensive but if they can get it under 100euro that's still very reasonable. I like the idea of printing car parts, Print while U wait, there's a business in that Idea...<br /><br />It will also be nice to build an entire 3D printer with it :)<br /><br />RichRichRap3Dhttps://www.blogger.com/profile/09348596756294999378noreply@blogger.comtag:blogger.com,1999:blog-8639215628525378898.post-86938986360635719262011-10-04T21:13:23.393+01:002011-10-04T21:13:23.393+01:00Hi Rich,
i shot grrf an email about the orbi-tech ...Hi Rich,<br />i shot grrf an email about the orbi-tech (3mm) PC and it looks like they're going to add it to the shop! Let's hope this will drive the price down a bit, as one spool (2.2kg) currently costs 118€ at orbi-tech's shop.<br />I'll definitely get one with my second Mendel build, i'm looking into printing useable RC car parts with it.<br />Cheers!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8639215628525378898.post-38134522438856097672011-10-03T13:08:58.974+01:002011-10-03T13:08:58.974+01:00Hello Kim,
Just a few KG for testing, I could hav...Hello Kim,<br /><br />Just a few KG for testing, I could have had more sent but shipping was also expensive and you really can't tell if it's going to work unless you try.<br /><br />Usually the MOQ is 20+KG, I got lucky with a friendly supplier who also wanted to see if it could be done. A few people have had custom coloured filament made up, so custom materials should also be investigated...<br /><br />I did test heating a white extruded section with heat and yes it does start to go clear again, things seem as strong clear or white so it needs more investigation.RichRap3Dhttps://www.blogger.com/profile/09348596756294999378noreply@blogger.comtag:blogger.com,1999:blog-8639215628525378898.post-79874101878565213942011-10-03T00:50:18.694+01:002011-10-03T00:50:18.694+01:00How much did you have made, and do you have an ext...How much did you have made, and do you have an extruder in your neighborhood? Can't say I've ever looked into having some filament custom made for me, but I would have expected you'd need to order quite a bit.<br />To get it clear(er) would it help to use a heat gun, or would it sag or slump before it got more clear.Kim Barronhttps://www.blogger.com/profile/09436222011109197761noreply@blogger.comtag:blogger.com,1999:blog-8639215628525378898.post-22336516080557477482011-10-02T21:29:55.692+01:002011-10-02T21:29:55.692+01:00Hi Tom,
Thanks, I also just spotted they have some...Hi Tom,<br />Thanks, I also just spotted they have some as Welding rod, it sure would be interesting to test 3mm and see if it can also be extruded.<br />If GRRF can get a few spools maybe we should try it. I wonder if they can get it made in 1.75mm?RichRap3Dhttps://www.blogger.com/profile/09348596756294999378noreply@blogger.comtag:blogger.com,1999:blog-8639215628525378898.post-40045010388003544602011-10-02T21:24:00.780+01:002011-10-02T21:24:00.780+01:00Thanks Ivor, I'm planning to try a hollow prin...Thanks Ivor, I'm planning to try a hollow print in PC, so it's just a shell with very few extruder moves(almost none) it will be interesting to see if it stays clear.<br />And if I get my full stainless running maybe a little hotter.RichRap3Dhttps://www.blogger.com/profile/09348596756294999378noreply@blogger.comtag:blogger.com,1999:blog-8639215628525378898.post-2168726933093430192011-10-02T17:11:30.989+01:002011-10-02T17:11:30.989+01:00Hats off to you Rich!
Orbi-Tech has 3mm PC in stoc...Hats off to you Rich!<br />Orbi-Tech has 3mm PC in stock ( http://www.orbi-tech.de/shop/Kunststoff-Schweissdraht/PC:::30_35.html ), maybe we can get GRRF to resell these!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8639215628525378898.post-51926135557760122452011-10-01T16:36:42.171+01:002011-10-01T16:36:42.171+01:00Hi Rich
Great work and write-up. The 'destruct...Hi Rich<br />Great work and write-up. The 'destruction test' video really shows how tough the Polycarbonate is in comparison to the other materials. I suppose the other key property of this great material, it's transparency, is lost via this shaping method. It would be really excellent if after shaping the desired object some of it's transparency could be returned, perhaps some baking process (open question). <br />NumberSixIvor O'Sheahttps://www.blogger.com/profile/10246251303703200543noreply@blogger.comtag:blogger.com,1999:blog-8639215628525378898.post-1907048149063586452011-09-30T23:03:08.767+01:002011-09-30T23:03:08.767+01:00Just spotted my post made it onto Hackaday.com
htt...Just spotted my post made it onto Hackaday.com<br />http://hackaday.com/2011/09/30/using-polycarbonate-filament-with-a-reprap/<br /><br />Thanks! That's made my night. :)<br /><br />Rich.RichRap3Dhttps://www.blogger.com/profile/09348596756294999378noreply@blogger.comtag:blogger.com,1999:blog-8639215628525378898.post-72652742295684183612011-09-30T22:39:47.038+01:002011-09-30T22:39:47.038+01:00Hi Jo, Thanks!
Hi Vik, I'm not exactly sure i...Hi Jo, Thanks!<br /><br />Hi Vik, I'm not exactly sure if the heated bed is required, I just thought it would need some heat because of the high glass transition temperature.<br />85 Degrees C was just a reasonable first test temperature, so maybe you can go much lower?<br />When I get that extruder back on the machine I will try again and see how low you can go with the heat-bed and PC.RichRap3Dhttps://www.blogger.com/profile/09348596756294999378noreply@blogger.com