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FDM PLA 3D printing - with a model making inclination

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  • Dave Ward
    SMF Supporters
    • Apr 2018
    • 10549

    #46
    Originally posted by Gary MacKenzie
    I know you don't want a resin printer but others might )
    There's nothing I'd like more than a resin printer, but living in a mid-floor flat means the problems associated with the resin & post-printing treatment are too much...............
    Dave

    Comment

    • Gary MacKenzie
      SMF Supporter
      • Apr 2018
      • 1057
      • Gary
      • Forres , Moray , Scotland

      #47
      Apols for the wording, i should have said '' I know you don't think a resin printer would not fit in with your present setup''

      Comment

      • Dave Ward
        SMF Supporters
        • Apr 2018
        • 10549

        #48
        The first major print - this is from Thingiverse, by user ' mkkvideo ' desert diorama base - I knew it would be a long one, so I levelled the bed very carefully - I didn't want any hiccups during the 10 3/4 hours it was going to take (!!)
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        This is 150mm x 150mm ( there are two holes for cacti bottom right, not yet printed ). I printed this at rather lower speed, for better quality.
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ID:	1195548 In close up. the 'rocks' are a bit weird, but with a couple of coats of primer won't look too bad. The underside of the print shows that the careful levelling paid off - a uniform surface, showing overall contact with the bed plate
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        I have had quite a few failures - most of which have ended up with balls of extruded filament being dragged around the build plate - but this failure was most annoying. When I printed it, his back was towards me & it looked great...............
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        Took about 3 hours to print & when it finished, I found this..................
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ID:	1195545 This is about 125mm high - I was almost tempted to print a 225mm high one, which would have taken 7 hours to print, I'm relieved I didn't!
        Dave

        Comment

        • Jim R
          SMF Supporters
          • Apr 2018
          • 15704
          • Jim
          • Shropshire

          #49
          Desert base looks good. Apart from the obvious the "Easter Island" statue is nice. Can you simply fill where necessary?

          Comment

          • Dave Ward
            SMF Supporters
            • Apr 2018
            • 10549

            #50
            Originally posted by Jim R
            Desert base looks good. Apart from the obvious the "Easter Island" statue is nice. Can you simply fill where necessary?
            The way the Maoi is printed is in what is called 'vase', or spiralise mode this is one continuous extruded filament from bottom to top - this means that the wall thickness all over is 0.4mm! it's too fragile to really do anything with, and to make things worse, there's no access to the inside ( solid base ). I'm afraid that will have to be written off as part of the learning curve!
            Dave

            Comment

            • Neil Merryweather
              SMF Supporters
              • Dec 2018
              • 5189
              • London

              #51
              Originally posted by Dave Ward
              The way the Maoi is printed is in what is called 'vase', or spiralise mode this is one continuous extruded filament from bottom to top - this means that the wall thickness all over is 0.4mm! it's too fragile to really do anything with, and to make things worse, there's no access to the inside ( solid base ). I'm afraid that will have to be written off as part of the learning curve!
              Dave
              I guess the clue is in the word 'vase' Dave- no tops on vases...

              Comment

              • Dave Ward
                SMF Supporters
                • Apr 2018
                • 10549

                #52
                A 6 hour print - a narrow road section - it looks a little odd, maybe a coat of primer will help
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                I primed the desert base I printed yesterday..............
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                There are also two cacti as part of this base, but they look like Mexican cacti! - I don't know if similar cacti are found in North Africa, but I'm leaving them off. I was a bit hasty in priming this, I realise that any model on this would need footprints/tracks left by it/them. Not sure about the best way to do that, but I think that heated metal will come into it..............
                Dave

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                • Dave Ward
                  SMF Supporters
                  • Apr 2018
                  • 10549

                  #53
                  A lick of primer & the roadbase looks a lot better
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                  It's called a Middle Eastern roadway - but it could be any street, anywhere
                  Dave

                  Comment

                  • langy71
                    SMF Supporters
                    • Apr 2018
                    • 1950
                    • Chris
                    • Nottingham

                    #54
                    Originally posted by Dave Ward
                    A lick of primer & the roadbase looks a lot better
                    [ATTACH=CONFIG]n1195746[/ATTACH]
                    It's called a Middle Eastern roadway - but it could be any street, anywhere
                    Dave
                    That would have been perfect for my toyota technical build .....
                    I take it you could sand down the road section to get a more uniform 'tarmac' effect ?

                    Comment

                    • Dave Ward
                      SMF Supporters
                      • Apr 2018
                      • 10549

                      #55
                      You can sand down PLA, but it has a low melting point, so no dremel! Probably better to give it a skim of filler....................
                      Dave

                      Comment

                      • Dave Ward
                        SMF Supporters
                        • Apr 2018
                        • 10549

                        #56
                        It was bound to happen, sooner or later - my printer was happily muttering away to itself, about 5 minutes left of a 4 hour print............................when all the lights went out! ( this was at 21:25 ). Only a 10 second outage, but enough to shut down my computer, and the printer - a bit of a bummer - you can see what is missing on the top layers, but it's not that bad - some high end printers have protection against power cuts, mine doesn't - I'll put up some pictures tomorrow, 'cos it's quite an intriguing model. I've just about finished printing out all the bits for the Bailey Bridge, but one or two don't pass muster, so I'll have to print out a few replacements
                        Dave

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                        • adt70hk
                          SMF Supporters
                          • Sep 2019
                          • 10409

                          #57
                          Looking forward to the pics Dave?

                          Comment

                          • Jim R
                            SMF Supporters
                            • Apr 2018
                            • 15704
                            • Jim
                            • Shropshire

                            #58
                            As you say Dave it had to happen. Real bad luck. I hope the print can be used.

                            Comment

                            • Dave Ward
                              SMF Supporters
                              • Apr 2018
                              • 10549

                              #59
                              Originally posted by Jim R
                              . I hope the print can be used.
                              I'm still really in the experimental stage, finding out what can ( and can't ) be done with my printer, so some prints are just to see if they will work - a lot of the prints freely available are only suitable for resin printing, and it's not always obvious to me which they are ( at the moment )
                              This is from Thingiverse, by user ' kdausman ' - I wasn't sure it would print...............
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                              I had the power blip, just as it was finishing the top layers...............
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                              You can see the blob at the top right where the printer stopped. This was printed at a standard quality & speed - if I upped the quality, the printing time may have doubled. All in all it was pretty successful.
                              My next experiment will be with some 'metal' filament - this is rather pricy, so I'll try a few small prints first. I've selected a couple of the Lewis Chess Set as guinea pigs They will take about 4 hours printing for a 90mm piece
                              Dave

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                              • Neil Merryweather
                                SMF Supporters
                                • Dec 2018
                                • 5189
                                • London

                                #60
                                I'm interested to see how you get on with the metal stuff Dave. I only ever tried the bronze filled and we had more failure than success...
                                I can't remember the specific issues to be of any help, sorry, but we did have some success.

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