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Tube Adapter Flange with Optional Grating (Parametric)

by CodeCreations, published

Tube Adapter Flange with Optional Grating (Parametric) by CodeCreations Dec 21, 2012

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Summary

Update 1/24/17: Now supports pinched and formed output. See below for an example that makes a nice 40mm fan shroud.

This allows you to cover a hole with a specific diameter (with optional grating) and then attach a hose of a different diameter. For example, if you're creating an exhaust vent for a 40mm fan to push air out through a 1.25-inch tube, then you can render this file with a 40mm input diameter and a 1.25-inch output diameter. The angle and thickness of the transition portion is configurable to ensure good prints.

There are 15 parameters, making it pretty flexible. The 60 degree transition works very well on my printer and also looks pretty good.

I've added a few scad files for mounting 40mm or 80mm fans to 1.25" flexible hose. The 80mm version has not been tested, but I'm using the 40mm models to exhaust ABS fumes for one of my printers.

The green one in the photo was printed a tiny bit small so I added some tape for a snug fit.

If you're building an enclosure and need to plug holes and still allow cables to get through, try this thing: http://www.thingiverse.com/thing:38819

I use this as part of my parametric printer enclosure, which is available here: http://www.thingiverse.com/thing:39787

Use these settings for a nice 40 mm fan shroud:
roundRadius = 3;
thickness = 0.5;
flangeThickness = 1;
holeDistance = 32;
holeDiameter = 3.5;

boltHeadDiameter  = 6;

angle             = 68;

inputTubeLength   = 1;
inputDiameter     = 37;
outputLength      = 12;
outputDiameter    = 14;

meshLines         = 0;
meshWidth         = 0;
meshHeight        = 0;

optimizeThickness = true;

pinchAngle1       = 60; 
pinchAngle2       = 70;
tipCutRadius      = 12; 
tipCutInset       = 1.5; 

Instructions

See the OpenSCAD file for complete instructions.

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I did not see a way to change the size of the tube connector outlet. There is no "Output Diameter" setting in the customizer, and none of the other parameters seem to change the connector size. Am I missing something?

Works perfectly now! Thanks for those changes, and thank you for making this. I made an air scrubber, and I need an outside vent attachment that will let me connect up a hose to redirect the air elsewhere. This works well for that purpose.

Okay it looks like it might have been some comments that were causing the problem, believe it or not. I don't know why it suddenly stopped working like this.

In any case, It should work now, and I've actually upgraded it to the latest version. The new version supports pinching and forming the the output end -- suitable for directing air to the work below the hot end. For example, set pinch1 to 55, pinch2 to 70, tip radius to 25, and tip inset to 5.

You're right -- it looks like it's getting hidden by the customizer now (presumably because there's a calculation in there). I'll try to fix it in just a bit.

I dont know how to plug in the figures in customizer to make one for 80mm fan with the small shop vac size outlet and mesh grate no bigger than 3/16 inches. what settings would that need in customizer?

Check the comments in the scad file -- it should be pretty well documented. It uses number of lines as opposed to distance apart because it looks a lot better that way, but you can just keep adding them until it's the size you want.

what is the size of grating openings? need no more than 3/16 to keep bees and wasps out from outdoors if exuast for 3D printer fumes

That's completely configurable using the customizer. It's probably about 1/8" on the white one shown.

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