Baffle wire pass throughs

[ERJDriver]

What's everyone doing? The 50 bucks a piece for pass through for plug wires is nuts

 

[andoman]

Are you using aviation or automotive wires?
I have the latter and used high temp silicone grommets. OD is just big enough to wiggle the boot through. ID is snug on the wire.
I’m sure someone will chime in with a 3D print file.

 

[rsr3]

Yeah, 3d print files are available - I’ve seen them posted on here. You’ll have to try a search.

 

[rongawer]

I went with grommets. It's easy to install, easy to remove a single wire, and a low cost option.

 

[BruceW]

RVPlasticparts.com

 

[TASEsq]

I designed and printed my own on a resin printer with high temp resin. These are for MSD 8.5mm wires.

Onshape

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[Desert Rat]

These don't have to be fireproof like a firewall passthrough. They literally just have to block air and not melt in the 150-ish heat soak after shutdown.

Based on that, you can make them out of just about anything, even for the big hole required for aviation leads. Two pieces of .032 aluminum with U shaped channels scissored together with a grommet around the wire works fine. Heck, a plastic cutting board from the dollar store would probably work as well.

 

[bjdecker]

I wouldn't use rubber grommets as they tend to dry rot over time.

I've used Heyco snap bushings -- different sizes for I.D., O.D., and panel thickness.

Heyco® Snap Bushings .250" (6,4 mm) to .875" (22,2 mm) Mounting Hole Diameter

www.heyco.com