PVC Duct & Static Electric Problems? - Page 3 - Woodworking Talk - Woodworkers Forum
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post #41 of 43 Old 03-16-2019, 08:11 PM
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Straight run along length of pipe. No need to wrap it. Again, remember you only need to provide a less resistant path for the electrostatic charge than the PVC. Plastic is a poor conductor so it is not hard to provide a less resistant path. I will get some pics up in a few. Will try to demo how I folded the tape back. The key is to ensure you have continuous connectivity to ground. Passing over joints and my blower discharge to the steel chip collection trashcan was the most difficult, but still quite easy.

I pretty much hid all the tape behind the PVC but can capture some images. The idea of running wire inside the PVC is concerning as it presents a great opportunity to snag chips (surface planer) and clog your system. It is unnecessary and problematic in my humble opinion.

- Greg

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post #42 of 43 Old 03-16-2019, 08:52 PM
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Aluminum Tape Grounding System Success

Follow up to my earlier post.

I didnít have any PVC for the demo, but these photos should convey the necessary info. I left the roll of tape in the frame for scale.

You can see in the photos, the aluminum tape is mostly behind the PVC. I also included a photo of the final connection to the grounding wire. Very simple stuff here. But completely effective. A firm plastic squeegee or credit card does an excellent job of smoothing the tape out like glass, if you are concerned about appearances.

I hope this provides an alternative, low cost, simple method of grounding a PVC dust collection system.

If you are a careful observer, you will notice my system is the lightweight drain, vent, sewer PVC pipe that is two layer. I recommend avoiding this stuff if you have access to the thin wall, monolithic PVC. It was not available here. The stuff I used is slightly rippled internally probably creating unnecessary turbulence in the airflow and reducing overall efficiency. (Unless you want to get really scientific and start a discussion on laminar airflow and boundary level turbulence efficiency. See wing turbulators. Yes, I had a career in aviation).
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- Greg

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post #43 of 43 Old 03-17-2019, 09:22 AM Thread Starter
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Thank you for taking the time to post the pictures and yes looks do matter.. Your's looks pretty good..
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