Online Community of Zenith Builders and Flyers
Maybe it's due to supply chain issues, but where I live the 3M Scotch Brite silicon carbide deburring wheels are super expensive now ($230 each), so I decided to try one of the cheap nylon fiber polishing wheels that are available on Amazon.
I bought a random 320-grit nylon wheel for my 8" bench grinder for $18 and I am quite pleased with the results.
I haven't used a silicon carbide wheel before so I can't compare them, but at less than 1/10th the price, the "nylon" nicely deburrs and polishes both aluminum and steel, and compared to doing it by hand, the wheel is much faster and leaves a nicer surface.
Anyway, I thought I'd post this here in case anyone else is in the same situation.
Tags:
is this what you bought?
https://smile.amazon.com/Diameter×1-Polishing-Grinding-Abrasive-Gritx18mm/dp/B07VMKB629/ref=sr_1_2?crid=2DFZX4AL92DRF&keywords=320-grit%2Bnylon%2Bwheel%2B8%22&qid=1658090038&sprefix=320-grit%2Bnylon%2Bwheel%2B8%2B%2Caps%2C73&sr=8-2&th=1
The prefered product for deburring is silicone oxide, also for scotch brite pads it is best to stay with a known brand such as 3M as some of the other cheaper alternatives have iron oxide which will also contaminate the aluminum and cause corrosion.
I could be missing something - if so, please tell me - but I'm not too concerned about a microscopic amount of iron oxide on the aluminum parts. To oxidize aluminum with iron oxide, you need more iron oxide than aluminum (like three times as much). The reaction stops as soon as one of the reagents is used up, so if there's only a microscopic amount of iron oxide available, I can't imagine it causing a detectable amount of corrosion, especially since the aluminum will naturally form a layer of aluminum oxide on its surface even if there's no iron oxide there.
If in doubt, you could avoid the red deburring wheels, but we use ferrous tools for everything else and they don't seem to cause problems.
Classified listing for buying or selling your Zenith building or flying related stuff...
Custom Instrument Panels
for your Zenith:
Custom instrument panels are now available directly from Zenith Aircraft Company exclusively for Zenith builders and owners. Pre-cut panel, Dynon and Garmin avionics, and more.
Zenith Homecoming Tee:
Flying On Your Own Wings:
A Complete Guide to Understanding Light Airplane Design, by Chris Heintz
Pro Builder Assistance:
Transition training:
Aircraft Spruce & Specialty for all your building and pilot supplies!
How to videos from HomebuiltHELP.com
Developed specifically for Zenith builders (by a builder) these videos on DVD are a great help in building your own kit plane by providing practical hands-on construction information. Visit HomebuiltHelp.com for the latest DVD titles.
© 2024 Created by Zenith.Aero. Powered by
Exlusive online community for active builders and pilots of Zenith Aircraft kits (Chris Heintz / Zenair light airplane designs).