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  1. #1
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    3D Printing of Small Bracket

    I'm looking to get a small bracket, stl attached, 3D printed and know almost nothing about it.


    I have got 3 quotes:


    0.178mm slice in ABS Stratasys £49 Black/White
    0.100mm slice height in MF Onyx £57 Black
    or 0.25 mm slice in ABS Stratasys £80 Not sure on colour.


    What difference would I notice between them all?? I am tempted to go for the middle priced one??
    Attached Files Attached Files

  2. #2
    Super Moderator curious aardvark's Avatar
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    well apart from needing a few supports in the corners - it's a pretty simple print.

    personally I would not get it in abs.

    what's it for ?
    ie what sort of weight will it support ?

    I'll happily print you one for £25 :-)
    PET would be my favourite, better than abs in all strength and heat aspects and a little more rigid as well as much better layer bonding - which seeing as those uprights are all vertical - is pretty important. .

    Hell if it's not going to get hot - pla would probably be as good. But PET would most likely be the best.

    where's the middle quote from ? ie: what material is it ? MF does not ring any bells.

  3. #3
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    >I'll happily print you one for £25 :-)

    Many thanks for the offer. Iive had a recommend for the MF Onyx - Markforged Onyx Nylon with chopped carbon fibres - so gone for that- https://markforged.com/product/onyx-filament/
    Wonder if that filament would work in other printers??

    It is for an AV item of kit - HDFury Diva and Vertex2 - https://hdfury.com/product/4k-vertex2-18gbps/. Once box, 500g or so, is slid in and cables connected, it should have a pretty stress free life. Just a little warmth at the display.
    https://www.thingiverse.com/thing:4095760

    There may be others with HDFury gear in the same boat - I'd be happy to post on AV forum??

  4. #4
    Super Moderator curious aardvark's Avatar
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    lol no the markforge is atwo filament system, a nylon carrier and a second extruder that adds the carbon fibre.

    Tough stuff and yes markforge do not do cheap anything.
    To put this into perspective cost wise. the bracket uses less than 40gms of filament and would take around 3 hours. I sliced it :-)

    1kg onyx = $190
    so 40gms - $7.6
    It's approximately 8x more expensive than normal filament.
    So even if it would work in a different printer (which is doubtful) it's way too pricey for anyone without a markforge to bother with :-)
    You can nget nylon with carbon fibre for dstandard machines - about 1/5 the cost of onyx.
    I'm not a huge fan - never been convinced that the carbon adds anything other than a black colour and a slightly stiffer part.

    So that price for the part - while most of this forum's members are going HOW MUCH ! - is actually a reasonable cost for the materials, time and process involved.
    the abs prices are total rip offs though ;-)

    But yep happy to make anything for anyone.

    $400 for a hdmi hub. wow !
    I guess if you do a lot of 4k or higher stuff you need something like that.
    I'm still running on old fashioned hd :-)
    Last edited by curious aardvark; 11-04-2020 at 01:51 PM.

  5. #5
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    Well, I've only been interested in this for a few days, but the Markforged One is a single filament printer and Onyx can be printed on its own:

    >It can be printed alone or reinforced with one of our continuous fibers to give strength comparable to aluminum. Use Onyx for anything from tooling and fixtures to end-use parts.

    And the main pic here only has a single spool holder - https://markforged.com/3d-printers/onyx-one
    And wasn't aware that there were other carbon reinforced filaments. Live and learn!!

    That is what I thought - a reasonable price compared with almost double for ABS. And the print job was done overnight 8+ hours.

    HDMI hub - small beer really compared to a Sony 590ES 4K lamp projector!! Sony has a strange HDMI wiring setup, so a normal switcher gets confused and doesn't work. Just changed from 2001 InFocus X1 800x600 to Sony 4K. Quarantine and lockdown toys!!

    OK - thanks, I'll pass on the message.

    I might have another job for a boom gooseneck nylon swivel block. The black bit in the attached picture. It will be slightly larger than this one, which is for a Mirror sailing dingy with mast/boom diameters of around 50mm. My mast/boom will be 83 and 63mm diameter, so I'm estimating that the block will be around 40mm x 38mm x 55-60mm But haven't finished designing it. Couple of 10.5 or 12.5mm holes for the bolts/fixings.

    gooseneck block.jpg

  6. #6
    Super Moderator curious aardvark's Avatar
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    looks doable.
    nylon with carbon fibre added is fairly common.
    And a LOT cheaper - even for the good stuff - than onyx.
    Yeah the onyx can be used singly or as part of themark forge process. I have to say that the parts they make with the continuous fibre reinforcement are bloody amazing. Really really strong.
    Had a go at bending a few bits over the years. Impressive stuff.

    This is probably a pretty good analogue to the onyx stuff: https://www.amazon.co.uk/eSUN-Filame...ustrial&sr=1-4
    But 1/4 the price.
    The casrbon fibre actually makes it easier to print with on a normal machine, as it reduces the viscosity and natural stringiness of the nylon.
    It will eat through a brass nozzle fairely quickly - but they're pence to replace.

    So i guess the real question here is: why don't you have a 3d printer ?
    Last edited by curious aardvark; 11-05-2020 at 09:42 AM.

  7. #7
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    Thanks. Why don't I have one - haven't got round to it yet. But with lock down??? But I have to think of things to make with it??
    What would be a reasonable machine - Artillery X1, Prusa etc etc?? Would an enclosed one be better to retain heat in the bed??

    A fellow boater thought the gooseneck part would delaminate with the forces involved??

  8. #8

    Can get SLA 3D printed in white, transparent or black

    hi, we can print this for CAD 60
    If interested please contact us via our website: Custom Prototypes

    Regards,
    Shab

    Quote Originally Posted by CRMS View Post
    I'm looking to get a small bracket, stl attached, 3D printed and know almost nothing about it.


    I have got 3 quotes:


    0.178mm slice in ABS Stratasys £49 Black/White
    0.100mm slice height in MF Onyx £57 Black
    or 0.25 mm slice in ABS Stratasys £80 Not sure on colour.


    What difference would I notice between them all?? I am tempted to go for the middle priced one??

  9. #9
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    >hi, we can print this for CAD 60.....

    Thanks - but I am in UK. Shipping included??

  10. #10
    Super Moderator curious aardvark's Avatar
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    machine wise it really depends on budget.
    having got all the different types of fdm machine - I would go corexy in future.

    However if you want to print nylon - then an enclosed machine is a really good idea - also one with a hi-temp hotend.

    don't seem to be able to get qidi machines over here at the moment - shame as they are all enclosed and come with a 300c hotend.
    But you could get a flashforge pro and add the high temp hotend fairly easily: https://technologyoutlet.co.uk/produ...003729df&_ss=r

    As far as delamination goes - it's not usually an issue. certainly not with nylon - nylon does not delaminate if printer properly.
    To be fair - pretty much only abs does, unless printed in a hot enclosure.
    All the other plastics if printed correctly have near perfect layer bonding.
    And then there's the orientation you print the part in - it's usually pretty easy to make sure any serious forces are directed in the right direction.

    As for what you would make - well anything you can design :-)

    You've got the hard part down - you can already do cad.

    Replacement parts for broken things, new things for one off applications - you seem to have enough interests to keep the printer running all day every day :-)

    And if you get realy bored you can download some trinket off thingiverse and make crap :-)

    My last 3 designs were a phone holder (vertical and horizontal models) and an ipad holder, that all lock into my cobra tripod. Way stronger and easier to change over than the crappy little screw in camera attachment. Which broke anyway. Fortunately it has a quick change system that does not rely on the little screw, like most tripods do.

    Once you've printed a couple items, you'll be amazed at just how many things you realise you can actually make.

    I3's are tricky things to enclose and have a number of issues - more or less depending on who made it.

    For an unenclosed single extruder - the twotrees sapphire pro is an awesome machine. Two basic mods and you've got an incredible machine for very little money.

    Enclosing would be interesting - particualrly as mine's rigged for direct drive feeding and has a filament holder that extende abouve the frame.

    But you're only a couple hours down the motorway from me, I'm 10 minutes from jct 11 m42. - so when/if lockdown stops you're welcome to pop up and have a play :-)

    The other thing is that you pretty much NEVER get a design right first time. Particularely with the wifn surfer widget. And if you are goign to pay someone each time you make an adjustment to it - it's going to get expensive really quickly.

    Look at it this way - the sapphire pro is 6 hdmi brackets or three gooseneck joints.

    It should be pretty easy to add a hi-temp hotend to it. Something I'm looking at.
    Last edited by curious aardvark; 11-06-2020 at 07:13 AM.

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