Description
There's a reason Tru-Oil shows up in so many shop drawers and garage workbenches. This blend of linseed and other natural oils soaks into the wood, cures into a hard clear coat, and leaves you with that deep, warm look that only a good oil finish gives walnut. Birchwood Casey has been making it for well over 30 years, and it's earned its spot as the go-to for gun stock work. The 32 oz size is the big one, ideal if you're refinishing several stocks or want plenty on hand for guitars, dulcimers, walking sticks, furniture, and just about any wood project where you want protection and looks in the same bottle.
Getting the Most Out of Your Tru-Oil Finish
Application is about patience more than skill. Most folks pour a little into their palm or onto a fingertip and rub thin coats straight into the grain, letting each one dry before the next. Birchwood Casey suggests waiting at least 12 hours between coats, and many builders give it a full 24 to be safe since rushing it can leave streaks. Knock down any runs or rough spots with 0000 steel wool or fine sandpaper between coats, wipe with a tack cloth, and keep going. Three to six coats gets most stocks looking sharp, though grain-filling on open-pored walnut can take a lot more if you want that glass-smooth depth.
Satin or Gloss, Your Call
Leave the last coat as-is for a glossy sheen, or buff it back with steel wool and rubbing compound for that traditional hand-rubbed satin luster. Pairing it with Birchwood Casey Stock Sheen and Conditioner will take the shine down further if you prefer a mellow, low-glare look on a hunting rifle.
Beyond the cosmetics, Tru-Oil works as a smart sealer for the spots you don't see. Wiping it under butt plates, recoil pads, and into inletted actions helps keep moisture out and protects the wood where water likes to sneak in. It's a practical, proven finish that rewards a little care with results that last for decades.
Key Specifications
- Manufacturer: Birchwood Casey
- Manufacturer Part Number: 23132
- UPC: 029057231328
- Product Type: Wood Finish
- Container Size: 32 oz
- Container Type: Bottle
- Form: Liquid
- Composition: Linseed and natural oils blend
- Appearance: Brown
- Suitable For: Firearm stocks and general wood finishing
- Finish: Clear, satin to gloss
- Quantity: 1 Bottle
- Shipping Weight: 2.05 lbs
What’s Included
- One 32 oz bottle of Birchwood Casey Tru-Oil Gun Stock Finish
Frequently Asked Questions
How many coats of Tru-Oil should I put on a gun stock?
Most stocks look great with three to six thin coats, but it really depends on the wood and the finish you're after. Open-grained walnut can take considerably more if you want to fully fill the pores and get that deep, glass-smooth look. Light coats built up slowly always beat heavy ones, so plan on taking your time.
How long should Tru-Oil dry between coats?
Birchwood Casey recommends waiting at least 12 hours between coats, and a lot of experienced builders give it a full 24 hours to be safe. Rushing it before the previous coat has cured can cause streaking and gumming when you try to buff. Temperature and humidity play a role too, so if it still feels tacky, give it more time.
Can I get a satin finish instead of a glossy one with Tru-Oil?
Absolutely. Leaving the final coat alone gives you a gloss sheen, while buffing it back with 0000 steel wool and rubbing compound produces the classic hand-rubbed satin luster. Birchwood Casey's Stock Sheen and Conditioner is another option to knock the shine down for a mellow, low-glare look.
Is the 32 oz Tru-Oil only for gun stocks?
Not at all. While it was made for firearm stock finishing, folks use it on guitars, banjos, furniture, walking sticks, and all sorts of wood projects. The larger 32 oz bottle is a smart pick if you refinish multiple stocks or do a fair amount of woodworking and don't want to run out mid-project.





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