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Author Topic: All metal Titan Extruder  (Read 239 times)

jinx

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All metal Titan Extruder
« on: May 24, 2018, 05:11:32 PM »
                       

       Move over bulldog here comes the all metal titan extruder  ( almost all metal the large gear still plastic) produced by SWmaker for just £20. Arrived 3 weeks after ordering from ali ( link at the bottom ) in a small brown box with the contents bubble wrapped.  just the metal parts  there was no ptfe tube or allen keys.

                       

       First appearance its a well made/machined aluminum extruder  very clean, mat black,  there a few subtle difference, like the PTFE adapter (push fit thingy), with a grub screw in the face plate to hold the adapter in place.

                     

     Unlike it's plastic counter part the main body of the metal extruder has a fixed filament guide  so be sure to get the right size for you!.

                     

  if you assembled a plastic titan there little difference in assemble apart from the two small bolts sits behind the adapter the other in front on the face plate and a turn of the grub srew to hold the adapter in place.  The oval cut out in the main body seems/makes it a little easy to install the lever and spring but there something that vexes me here.

                       

    When you compare the bearing on the idler lever (see insert pic) to the width of the bite of the hobbed area of  the filament Drive Shaft there appears room to loose traction,,, but once its all bolted together theirs little room for the filament to role across, no problem centering the two bits just have to play with the small gear on the motor shaft to get the lever to sit right and centered. 
( would have liked too see the mk2 idler thou, looks a lot more sturdy,, BUT I've more liked to see an CNC vid of them machining it)
 
 The big gear:
                       
                       
            Different from the one shown in the ali link its similarly to the original design.

  Quick vid of the filament travel on the hobbed gear its a 10 min segment of a cube print sped up to spare you!! for the most part the filament fed ok without to much deviation then about 38 sec into the vid fila went west!!

             

    Quickly recovered thou and to be honest I aint that worried, the feed in aint the best ( coming to the end of the spool)

                     
   "The wandering filament isn't about loss of traction, it's about feed rate. When the filament rides over to the side instead of the center of the hob, the diameter is larger so the filament will feed slightly faster while it's over there, resulting in temporary over-extrusion. That would show up as a bulge in the print layer if it occurred while printing on the surface of a part."
                        the_Digital_dentist reprap forums
                     

comparing filament guides Digital dentist gives a belting account of possible concern with the gap between the guide and the hobbed shaft  while using soft/flexible filament... Well worth a read https://reprap.org/forum/read.php?1,821321 30th posting
bowden :
                       

  Of the whole design this bowden adapter I just wasn't a fan off, the connector fits like a glove into the extruder body, BUT that bigass  brass hexagon nutty thing sticking out the top just a non starter!, reminded me of the v6 clones!!!. So replaced that part with the adapter from a plastic titan I think it made the bowden connection a lot more sleek and pretty  8).

early conclusions: I bloody do like it  ;D its well made nice clean finish the face plate and body has a good fit and came dint free, assembly was a breeze one thing to note are the drive shaft bearing are loose fit in the body and when dissembling they possibly gonna run away from you!. Fila change  had a smooth transition between the sections, no horrid strange sounds or broken gears "Yet!", not so keen on the large gear thou cosmetically it appears there a mold line or something while being pressed on the hobbed section,,runs around the gear ugly but am not watchin it  >:D ( see it in the vid )
 
    The only nagging concern I have is to grease or not too grease the area of the motor shaft where the idler sits. metal on metal and a D shaped shaft at that.. :o thinking I be watching the auction for a nema with a complete round shaft.
                                                only time will tell.   
       
few extra pics:


   

marvin printed at .1 layer height with .8 (2 perimeter) and a 10% infill at 18 mm/s  coupled with hex VI, not completely disappointed there still room for tweaking both the HotEnd (HE) and the extruder. Firmware wise with marlin I got a Estep 428 there is a little over extruding there me thinks, thou I get a better finish with top surfaces with that value rather than the default 418 bantered around WWW.
« Last Edit: May 29, 2018, 10:28:43 AM by jinx »
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KingBeetle

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Re: All metal Titan Extruder
« Reply #1 on: May 26, 2018, 11:32:04 AM »
How does the weight compare to the plastic one?  Would it be suitable for direct drive applications, or would the weight still favor a plastic housing, even with a pancake stepper?

jinx

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Re: All metal Titan Extruder
« Reply #2 on: May 27, 2018, 04:24:23 AM »
Quote
How does the weight compare to the plastic one?
just something I never compared,  wasn't overly weighty that I had concern with, think it be just fine in a direct drive system, thou I think if  I was to go back to a direct drive with a prusa i3 build, I aim for a titan aero ( ali link to an Aero) https://tinyurl.com/y855t7fu upgrade and experiment with a pancake stepper to reduce overall weight on the X carriage.
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