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Thread: Filament Boats

  1. #1
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    Lightbulb Filament Boats

    Edit: My 1st Thingiverse release... https://www.thingiverse.com/thing:2385588

    I am thinking I can print the long bolt and nuts if it is bigger (10mm ID min?), but what size?
    Is anyone successful printing bearings?

    I happen to have a lot of R8 bearings (1/2"ID x 1-1/8"OD 5/16" thk)
    So I made a filament boat with a 1/2" shaft with an 1/8" pitch 4" long.

    fbicon.PNG

    The STL's can be scaled for other bearings, but I'd really like to know what is common other than 8mm ID.

    If a 12mm bearing is used, the parts can be scale 12/12.7 or 10mm ID... 10/12.7 ...etc.
    I like the idea of using 6001 bearings (28x12x8) if the parts are scaled to 94.48%
    The thread pitch is 8 TPI

    All these prints are optimally oriented based on the left extruder.
    It manages the start/stop location favored to the left.
    You will see an relief channel in the nut for this purpose.

    The default orientation of the STL files is for left extruder; for right extruder, rotate Z 180 degrees when placed on the bed.

    Print 2 of these:The grooves go down. These help avoid curling.

    wrench.jpg


    Print a total of 2 of these: This one will test your build plate adhesion. On the left extruder, this orientation leaves the "blob" on the unused left edge.

    screws.jpg

    Print a total of 6 of these. A successful print requires proper orientation to the start/stop location for each layer. Left extruder orientation shown.

    nuts.jpg

    Careful placement can put all these parts on a single build plate in the recommended orientation.


    And last but not least, for the adventurous, the link is a 3D Builder .3MF file with all the parts on a plate ready to print.

    https://drive.google.com/file/d/0By-...ew?usp=sharing

    (for some reason, this forum will not let me upload .3mf files, even if they are zipped... Bo.)

    ...and the STL of the .3mf...
    https://drive.google.com/file/d/0By-...ew?usp=sharing
    Attached Files Attached Files
    Last edited by TommyDee; 06-15-2017 at 02:13 AM.

  2. #2
    Administrator bolsoncerrado's Avatar
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    I think 608Z are the winners here with all the spinner figet madness...

  3. #3
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    R8 bearing filament boat. Scale parts to use other bearings.

    This one is pretty much ready right off the printer.
    Orientation of the nuts when printing is important as there is a relief for the start/stop of the layers.
    I recommend the shaft be printed at 45 degrees.
    There is a small rise on the plates and the nuts to contact only the inner race of the bearing.
    If the bearings don't spin freely, you might locate and correct the interference.
    Adjusting this for different spools is a breeze; loosen one of the nuts from the nut-pair.
    Now you can quickly and easily move the bearing side to side just by turning the appropriate nut with the spool on place.

    The unit also breaks apart quickly. Just loosen 4 nuts and turn the shaft 90 degrees in the end plates.
    They come out without removing any nuts. Makes for convenient storage. No more Lego boats!

    But I am all for someone scaling this set to " 8 divided by 12.7 ", and see if it survives.

    Here's the prints: Each were printed (lp12100) Left, PLA, 200um, Strong, Cross, no supports and no sidewalks.

    deboat.PNGtheboat.PNGboatparts.PNGboatset.PNG

    I'll attach the files soon.

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  5. #4
    Administrator bolsoncerrado's Avatar
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    Those are really coool looking printed parts! which pla is that?

  6. #5
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    Google Photo Enhancement...

    But yes, that is the PrintRBot filament.
    It is a nice filament but I have to use glue on LokBuild to make it stick reliably.
    Not for everything, but the threads in this print for instance, they tend to not adhere if you use the "light tough gapping" method (no squishing the 1st layer!).
    I've had the nut just pop loose because the plate was cooling off.
    You may also notice my anti-curl reliefs on the 1st set of layers to combat adhesion issues on long parts.

    There is a "hardener" added to the PrintRBot material, I am certain of it.
    It makes is act a little like ABS on LokBuild.
    A little like Hatchbox but toned down significantly.
    It has great adhesion properties to the previous layer too.
    Funny thing is, the 3DS glue only sticks to the LokBuild so the print removes clean.
    And the glue is ready for about 2-3 more prints.
    Then you water it down and you get a nice smooth finish as long as it remains thick enough.
    The water makes for a nice finish.

    And this adhesion thing is definitely PrintRBot because the 3DS filament loves the LokBuild.
    But the 3DS stuff is more like Inland filament, "wet".

    I'll post this thing up formally on Thingiverse as "R8 Filament Boat" but in the meantime, I'm double-checking the prints and will post up the STL's soon.

    Bearings can be had for under $1/each in 10pc sets, delivered. That covers two boats!

    Personally, I am seriously allergic to grease.
    I removed the seals and washed the bearing out completely.
    Nice touch for the boats too. Buy stainless steel!

    Interesting note: scaling the prints to 94.48% should let you use the metric bearing 6001, 28 x 12 x 8 which can be had for as little as USD$0.46.

    - - - - - - - - - -

    Sweet!

    boats.PNG

    Files and info uploaded in the OP

    - - - - - - - - - -

    Just say'n...

    Coat-hanger wire is universal, right?

    justsayin.PNG
    Last edited by TommyDee; 06-12-2017 at 05:43 AM.

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  8. #6
    Administrator bolsoncerrado's Avatar
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    It is. Strength of the wire is another story....lol

  9. #7
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    Just print some supporting elbows.
    Point being, the wire can be a medium supported by prints.

    The idea being that there is a lot of 3DS hub available to hang things from without introducing the weight to the clamp.

    - - - - - - - - - -

    Here's a fun one...
    A real bearing right from your print bed.

    I created some using PrintRBot filament.
    Came off the printer totally free to do its thing.
    Attached Files Attached Files

  10. #8
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  11. #9
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    I was working on a printable version of the R8 bearing for the filament boat.

 

 

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