Conduit End Caps?

This topic contains 10 replies, has 5 voices, and was last updated by  geodave 4 months ago.

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  • #101316

    Christopher
    Participant

    Are there recommended stl files out there for EMT Conduit End Caps (U.S.) to trim them out and make them look neater and tidier… and to keep the spiders out? *grin*

    #101320

    Kelly D
    Participant

    I used it as an opportunity to learn Fusion. Pretty easy project for Fusion beginners like me. I made mine to protect the wiring from abrasion on the cut tube edges. I can see if I can figure out how to share Fusion files if you’re interested (and if anyone knows how – feel free to let me know.)

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    #101323

    Christopher
    Participant

    Thanks, Kelly.

    My day job is as a Graphic Designer and so, generally speaking, I should be comfortable with learning Fusion 360. But by the time I get home… you know how it goes! đŸ˜‰
    I’d also told my gal that I’d design a part for the vacuum cleaner to 3D print. I’ve gotta learn it at SOME point! LOLOL

    One of the issues that I’m pondering is how to determine the tightness/looseness of a part. I suspect that that means printing a few incarnations before I get it right.

    #101329

    Kelly D
    Participant

    Ah! Perfect then. Illustrator will give you good DXF files to take into Fusion. There are tons of great tutorials and an equally great coursework series right from Autodesk. They move way too fast but pause and rewind will get you through. I came Tom a Fusion with a lot of 3D experience and feel like I’d have been better off had I not known the other software.

    As for the tolerances – I’m still figuring that stuff out too. My first Fusion foray was to make some CD inserts that would click into the middle of a CD and fit a skate bearing in a cup on one side of the CD. The first ones were measured and modelled exactly and way too snug for the bearing. The PLA must have shrunk quite a lot. I can’t recall how much bigger I needed but I don’t think that matters as I’m willing to bet all filaments and types of filaments have their own behaviour.

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    #101337

    Janus
    Participant

    With PLA on my Ender 3 the outside dimensions fit pretty well. Inside dimension I model 0.2mm bigger in Fusion. Works every time.

    From what I have read, it’s very common for 3D prints to have inner dimensions turn out a bit small.

    Be sure to calibrate your flow rate (typically 92-95% for PLA)

    1 user thanked author for this post.
    #101339

    geodave
    Participant

    Here is a design I did a while back that works well for me using 3/4″ EMT.  I used openscad to create this.

    https://www.thingiverse.com/thing:940458

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    #101386

    Christopher
    Participant

    So, I see that you have holes… for cables… not simply as nice snug doors for spiders!

    #101387

    Kelly D
    Participant

    You’ll want to run your cables through the tubes where ever possible – makes life so much tidier. You could always fill the space around the wires with a silicone plug of sorts but I’d recommend something less permanent. Even if you coat the opening and the wiring with vaseline or something like that that would prevent he silicone from sticking but would still make a plug.

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    D98E03F8-E6BC-4220-AB4A-4DCC400815BE

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    #101392

    Christopher
    Participant

    Thanks, Kelly!

    Everyone else in our shop uses Adobe products and I, because of my Canuckian beginnings, use CorelDRAW. lol But it does export/save DXF files if I will it! hehe

    For sure, anything that needs to “click” snugly into another part is a whole new level!
    My “main” 3D printer is my smaller, Monoprice Mini Delta. Unfortunately, calibrating dimensions has never been easy with it. But, I do have another Cartesian printer and so may try it.

    Yes… filaments all have their own personalities!

    Thanks again!

    Cheers!

    #101420

    Mike Atencio
    Participant

    You can buy them in the electrical department at Lowe’s I did that. Just add about 1.5 inches to your conduit cut, then they won’t interfere with tightening down the corner at all as they will stick out about 3/4 inch on each end.

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    #101438

    geodave
    Participant

    So, I see that you have holes… for cables… not simply as nice snug doors for spiders!

    It is written in openscad, so if you are familiar with it, you can easily create them without holes.  Openscad makes it easy to adjust the design by simply changing the variables or commenting out a line or 2 that have the holes cutting thru the part.  Some of my pipes have wires running thru them, so I had to have holes in them to allow the wires thru.

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