Category Archives: Metalworking

Adding an Air Filter to a Box Fan

During the wildfires of 2020 I saw many instructions for how to quickly duct-tape air filters to a box fan, to remove smoke from household air. Years before that I was interested in buying a woodworking shop air filter that would remove fine sawdust that otherwise floats in the air for days or weeks.

This post describes my experience making a air-filter-box-fan design, using 3D printed clips instead of duct tape to hold the filter to the fan.

CAUTION: I have no idea how safe it is to clamp an air filter to a box fan. Such a filter may reduce the air flow to the fan’s motor, which might result in overheating and fire. Always supervise the running fan. You’re responsible for your own safety.

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Removing Rust and Paint from the Vise

I wasn’t happy with how much rust remained after the vinegar treatment, so I decided to give the vise a treatment with Evapo-Rust – my favorite rust remover.

I also decided that so little paint was left, I’d strip the remaining paint off, either with paint stripper or a wire wheel, depending on whether the paint had lead in it.

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Restoring a Rusty Vise – it Begins

WARNING: I don’t know what I’m doing!

On a whim I bought a rusty, Ace brand 3 1/2″ (say 90 mm) vise at a garage sale. I’ve watched a few vise restoration videos, so I think I have a chance at restoring it…

How it started: I’ve been watching a lot of Matthew Read’s excellent clock repair videos (Open Clock Club Archive, How to repair pendulum clocks, and How to Repair Pendulum Clocks – LIVESTREAM). Lately he’s been repairing an early 19th century clock, doing a lot of metalworking in the process. Inspired by that work – and needing a vise for my clockmaker’s bench – I decided to buy a rusty vise and attempt to restore it. This post covers the first step in that restoration.

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Clock Repair: My Meager Knowledge of The Hardness of Metals

It’s taken me a while to learn some basic metallurgy I need for clock repair. When I started I scratched up my brass clock plates by cleaning with SOS pads – steel wool – because I didn’t know that steel is harder than brass. In this post I collect what I’ve picked up in this metals game of Scissors, Paper, Rock.

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