Read this to get an understanding of what is involved:
Pretty much the way I did it.
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8200rpm, post #2
Re: My 1st K31 Refinishing Project - COMPLETED!!! (PICS) #2 [-]
Mar 18 07 8:33 PM
HOW I DID IT
PURPOSE
My intent was to return a well-worn K31 beech stock to as close to its former condition as possible without compromising "too much" of its historical authenticity. What is "too much" or historically authentic is a highly debated matter. I personally decided to use materials and methods that would restore the stock to as close to its original finish as possible... SHELLAC.
MATERIALS AND SUPPLIES
Homesteadfinishing.com:
-Shellac, Dark, Dewaxed, Pre-mixed 5 lb. cut
-500ml Squeeze bottle
-600ml Graduated measuring beaker
Local hardware store
-Denatured Ethanol
-Steel wool 0000
-Sanding paper 220 grit
-Small sanding block
-Wood bleach, oxalic acid (Savogran brand)
-Masking tape
-Disposable, plastic wallpaper or painting tray
-Spray bottle
-Clean cotton cloth from old white T-shirts
-Steam iron
-Clean old bath towel
-Clean toothbrush
-Baking soda
PROCEDURE
Removing the Existing Shellac:
-Remove handguard and stock from rifle; remove buttplate from stock.
-Use masking tape to cover screw holes for butt plate and sling keeper. Or else, the holes will fill with debris and make reassembly difficult. Yes, I found out the hard way.
-Using a plastic tray to collect all drippings, rub the wood with an alcohol-soaked cloth. This may take a few passes and just a little elbow grease to remove the shellac.
-Wait a few minutes until the wood dries. If it appears raw and dull, the shellac is sufficiently removed. If shiny patches remain, rework the areas with alcohol and cloth. The orange color of the shellac may remain in the wood. As long as the wood appears dry and dull, proceed to the next step.
-Once the wood is dry, use a pair of rubber bands on the locations of the front and rear stock bands to hold the handguard to the stock. Sanding the stock and handguard separately may result in rounding of the mating edges. LIGHTLY sand ONCE along the grain using 220 grit sandpaper to prepare the surface of the wood. At this point, the orange color should come off with just a single pass. Do not over sand; just one pass should do it. Avoid sanding cartouches, and use a flat sanding block on top of the finger grooves to keep the countours crisp.
-Wipe down the wood with alcohol and let it dry.
Raising the Dents:
-Tape off all cartouches using masking tape.
-Cover an ironing board or table with a clean, unwanted bath towel and place your stock on top.
-Fill the steam iron with deioized water and set it to the steam setting.
-Soak a piece of cloth with water and lay it on top of the stock.
-Apply the iron on top of the wet cloth for a few seconds until the water on the cloth begins to steam. Go over any dents on the stock. Steaming may not remove all dents, but you may be surprised at how effective it is.
-Allow the stock dry.
Bleaching the Wood:
-Prepare a solution of wood bleach in a spray bottle.
-Liberally spray dark areas of the stock, and use a toothbrush to scrub the wood. Wait 10 minutes and repeat several times if necessary. Bleaching will not remove every stain, but it's suprisingly effective.
-Prepare a solution of baking soda and apply on areas that were bleached to neutralize the oxalic acid. Wood bleach is sufficiently neutralized when fizzing/bubbling stops.
-Wipe down the wood with a water-soaked cloth to remove any residual baking soda. Rinse the cloth in fresh water several times during this process.
-Allow the wood to completely dry.
Applying the Shellac
-In a squeeze bottle, prepare a 1 lb. cut of shellac following the mfg's directions.
-Fold a 8"x8" piece of cotton over several times to form an applicator pad. Soak the cloth with shellac.
-Rub the shellac onto wood along the grain using short strokes. Reapply the shellac onto the pad using the squeeze bottle before the pad dries out. After one light coat, let wood sit for 15 minutes before the next coat. Repeatedly apply several light coats while waiting 15 minutes between each coat. I stopped at seven light coats. YMMV.
-Allow the shellac to dry for a couple hours. The surface will feel dry to the touch. At this point, the finish may have a "sticky" look and resemble a surface that had a Sprite spilled and dried onto it.
-If desired, LIGHTLY rub using 0000 steel wool to give the surface an even, dull luster. No more spilt soda look!
-Rub down the entire stock with a clean, dry cotton cloth to remove any steel wool. Additionally, go over the entire stock using a silicone gun and reel cloth.
-Reassemble rifle and take a boatload of pictures!
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