Brad Guns

Full Disclosure - CLaude helped me turn my notes and pictures into this page.. It really turned my chickenscratch into nice sentences.

Before You Start — Oil the Gun

Add a few drops of pneumatic tool oil into the air inlet port — the small fitting at the back of the brad gun where the hose connects. Do this before each use to keep the tool running smoothly.

The Compressor

We used a Kobalt Quiet Tech (2 gal, 125 max PSI) and a Craftsman (6 gal, 150 max PSI). Either works well for brad nailing.

Starting the Compressor

1. Press the red button on the side to turn the machine on.
2. The compressor will run until the tank is full, then automatically shut off.
3. The pump will restart periodically as air drains — this is normal.

Connecting the Hose

Push the air hose fitting firmly into the brad gun's inlet port until it clicks and locks in place.

This didnt happen with our blue compressor and so we ended up moving to the red compressor - the craftsman. We think that maybe the gasket inside the fitting of the compressor dried out so the hose couldnt seal when it locked in.

Setting the Right Pressure

Turn the regulator knob on top of the compressor. The left gauge shows tank pressure; the right gauge shows the regulated tool pressure — that's the one you're adjusting.

How to Dial In Pressure

1. Fire a few test nails into a scrap or practice piece.
2. Adjust the regulator up or down until you hit the desired nail depth.

Goal: The nail head should sit slightly below the wood surface — just barely countersunk, not too deep.

What PSI to Use

Most brad nailers operate between 70–120 PSI. Our gun wouldn't reliably fire below about 90–100 PSI, which is consistent with typical manufacturer specs (the label on our gun was worn off, but industry standard for 18-gauge brad nailers is 70–120 PSI, with 90 PSI being the most common starting point).

Important — Plywood layering effect: When shooting through the top face and into the edge of plywood, you're driving through two layers of material. The brad goes in noticeably deeper on those edge shots at the same pressure setting. Factor this in — you may want to reduce pressure slightly when nailing face-to-edge vs. face-to-face.

Shooting Test Nails

Always test on scrap pieces first and adjust before moving to your actual workpiece.

Troubleshooting

Gun Not Firing or Weak Pressure — Dried Gasket

The gasket (rubber seal) inside the hose fitting can dry out over time. If the gun won't fire or loses pressure, try switching to a backup hose/tank or replace the gasket.

⚠️ Malfunctioning Gun — Stuck Nose Piece

The small metal contact trip at the front of the gun was sticking out after firing instead of retracting. When this happens the gun won't fire again until it resets.

Fix: - Firmly press the nose piece down against a scrap piece to push it back in. We just smacked it. - Still often had to fire a few times to get a good one.

After You're Done — Drain the Tank

Important: Open the drain valve at the bottom of the compressor tank after each use to release trapped moisture. Skipping this causes rust to build up inside the tank over time — as shown below.