Sand and Varnish the Raceway
Sand the hardwood raceway smooth and build a durable clear finish. Thin coats and patience are what make it look bought, not homemade.
What you’re building in this step
A smooth, wipeable hardwood chip rail that looks like furniture—not raw plywood. This is the surface everyone sees between hands.
Sand thoroughly
Start around 220 grit, keep the paper clean, and remember birch plywood is a veneer—you can sand through it if you stay in one spot too long. Finish with 320 grit so the clear coat lays flat.
You can stain for color or go clear only. Either way, the prep work is what shows.
Build the clear coat
Apply several thin coats of semi-gloss oil-based polyurethane with a quality brush rated for oil finishes. Six coats, with a light sand between cured coats, builds a deep finish you can wipe clean after a spill.
Dust between coats. Specks in coat three are still there in coat six. Don’t rush the recoat times on the can—soft poly fingerprints never quite disappear.
Inspect before you move on
When the final coat is fully cured, check the raceway in good light for runs, dust bubbles, and scratches. Fix flaws now with a local sand and another thin coat—before cups and cloth go in.
Tip: Wipe with a slightly damp microfiber to reveal scratches dry dust hid.
Useful for this step
Tools and supplies that match the work above. Full list on the materials and tools pages.
Random-Orbit Sander
Speeds up raceway sanding before varnish. Keep it moving so you don’t burn through veneer.
Sandpaper Assortment (80–320 grit)
Start around 220 on the raceway, finish near 320 before clear coat. Don’t sand through birch veneer.
Oil-Based Polyurethane (Clear, Semi-Gloss)
Build thin coats on the hardwood raceway. Pair with a brush rated for oil finishes.
Foam Brush Set
Disposable foam brushes for varnish coats when you want easy cleanup between layers.