tag:blogger.com,1999:blog-4339813531032979196.post2615108089762231507..comments2024-02-28T07:32:59.864+00:00Comments on HydraRaptor: Dribble and smokenopheadhttp://www.blogger.com/profile/12801535866788103677noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-4339813531032979196.post-58618136903732009802007-10-01T18:24:00.000+01:002007-10-01T18:24:00.000+01:00Ah, I see conduction may be important as well, tha...Ah, I see conduction may be important as well, thanks I will add it to my list of things to try.nopheadhttps://www.blogger.com/profile/12801535866788103677noreply@blogger.comtag:blogger.com,1999:blog-4339813531032979196.post-57623599491461171872007-10-01T17:29:00.000+01:002007-10-01T17:29:00.000+01:00The foam seems to do one important thing. It enab...The foam seems to do one important thing. It enables the card, paper really, to heat up promptly and avoid conducting the heat away from the molten HDPE too quickly.Forrest Higgshttps://www.blogger.com/profile/17208965471464716174noreply@blogger.comtag:blogger.com,1999:blog-4339813531032979196.post-73234931611977902072007-10-01T13:25:00.000+01:002007-10-01T13:25:00.000+01:00Yes I originally thought the steel wire was a neat...Yes I originally thought the steel wire was a neat trick until I started making and using it! I was planning to go back to the straight design at some point but now I have seen Vic's results with PLA I may have to solve the offset a different way.<BR/><BR/>I think I put the heater that far up to leave room for the thermistor. The first one I used was a 4 or 5mm diameter flat disc that Englewood game me. Also the turns are quite spread out because I used bare nichrome. I don't imagine it makes a lot of difference with this design.<BR/><BR/>My understanding of foamboard is that it is foam laminated with card? I didn't imagine the foam did anything for you so I was planning to try various types of card, wood and perhaps some emery paper. It would be good to find something that works well and is reusable. I see Vic is using plywood.<BR/><BR/>I did try smearing, I just got a flat strip which curled up in the same way.nopheadhttps://www.blogger.com/profile/12801535866788103677noreply@blogger.comtag:blogger.com,1999:blog-4339813531032979196.post-7852191888347704202007-10-01T05:36:00.000+01:002007-10-01T05:36:00.000+01:00BTW, I'm extruding HDPE successfully onto the stan...BTW, I'm extruding HDPE successfully onto the standard foamboard that you can buy to mount photos and posters on in an art supply shop. It's not an ideal surface, but the HDPE does stick on it.<BR/><BR/>You might also want to move your extruder head a bit down so that it smears the first layer on the base material a bit. I've found that that helps.Forrest Higgshttps://www.blogger.com/profile/17208965471464716174noreply@blogger.comtag:blogger.com,1999:blog-4339813531032979196.post-35713153397188316952007-10-01T05:33:00.000+01:002007-10-01T05:33:00.000+01:00Courage. You're learning all the hard lessons. T...Courage. You're learning all the hard lessons. Thanks for writing them down. I'd wondered if Adrian's using that steel cable was a good idea, but I'd never have guessed that it would have the effect it is having on your flow rate.<BR/><BR/>Just out of curiousity, why are you wrapping your nichrome so far back up the extruder barrel? I've started mine about a half mm from the end. Mind, I have a lip on mine that keeps it from slipping off.Forrest Higgshttps://www.blogger.com/profile/17208965471464716174noreply@blogger.com