Router Plane

Monday, March 7, 2016

Shaker Oval Box – #6 Finishing

On these pieces I felt that a gloss finish would not be in character so instead decided to use a satin or matt finish.  My plan is to spray three regular coats with the lacquer cut about 20% with thinner wet sanding between coats.   The final finish coat is thinned more, about 50%.  This is less thinner than I use for a gloss finish.  I thin less because the matt finish is a little more forgiving than a high gloss which shows every little inconsistency.

Out came my airbrush to apply the lacquer.  This is pretty typical of the setup I use.  At this point I have given the boxes their first two coats and am ready to apply the third coat.  The airbrush (minus the lacquer bottle) is on the right side in a stand with the regulator to its immediate left.  My air compressor is in another room and provides air to multiple points in the shop.   In the background you can see the red tipped airbrush bottles, one for the lacquer mix and one for thinner plus an extra in the cardboard box.  To the right of them are two larger 8 ounce containers that have unthinned lacquer and thinner.  They are filled as needed from gallon cans and allow me ease of use not to mention lessen the chance of making a mess trying to pour from a gallon can into the small airbrush bottle.
Air Brush Setup
After applying a total of 4 coats of lacquer as outlined above and letting the parts cure for 5 days I sanded them with 8,000 grit wet sandpaper to remove any dust nibs or other bits from the finish and these two boxes were done.  Also, if you look close, the small gaps between the lid and the band have all but disappeared.
Completed Set of Boxes

Here is a closer view of the lid where it cracked upon landing on the floor.  It ended up not being almost invisible and the glue made it solid. 


If you remember I ended up with five 1/16" thick blanks out of the original piece of cherry.  In making the first two boxes I used 2½ of the blanks.  That left me with enough material to make a second set.  For this set I decided to change the top and bottom material.  The bottom is going to be made out of cherry matching the sides and the top will be a piece of birdseye maple.  The construction process for these boxes is the same as the first two so no reason to go through the details again.  However, the finishing is different.  To get the birdseyes in the maple to pop requires a 3 step process done before I spray on the lacquer.  Since I will be unable to do this initial work on the maple face that is inside the box once it is installed in the lid band I need to do that side before it gets pegged in place.

The first step is to make a mix using 3 drops of Dark Vintage Maple dye mixed with 1 tablespoon of denatured alcohol.  I could mix the dye with water but the water raises the grain and that is not what I wanted.  The alcohol does not raise grain but dries faster which can cause lap lines if you are not careful.  On a piece like this small it’s not a problem.

The dye and alcohol solution is evenly applied with a small piece of cloth.  Here the left piece is plain and the right side has been given the first coat of dye.
Not Dyed (Left), 1 Coat Dye (Right)
The second step is using 220 and 320 grit sandpaper I sand most of the dye off the maple leaving the “eyes” darker.  Here the left piece has first coat of dye and the right side has been sanded.
1 Coat Dye (Left), Sanded (Right)

The last step is to apply a second coat of the dye solution which will give added emphasis to the eyes and will warm up the rest of maple followed by a very light sanding.  Here the left piece is sanded and the right side has been given a second coat of dye.  At this point the surface still looks a little flat but when the lacquer is applied the eyes will pop out and the surface will get some depth.
Sanded (Left), Second Coat of Dye (Right)

I can now install the tops into the lid bands and complete the woodworking as before.  With that done I go through the dying and sanding process of the exposed top just like the interior.  Following final sanding and blowing the dust off, this time being careful not to blow the top off I am ready to spray the lacquer.
Birdseye Maple Tops in Place

The lacquer finish goes on using the same process as the first two boxes.  The difference being the effect the birdseye maple top gives to the completed pieces.  Here with a couple of coats of lacquer applied you can see the depth and definition the finish process adds to the maple.
Lacquered Birdseye Top 

With all the lacquer applied, cured and the finish rubbed out the second set of boxes are complete.

Completed Boxes

With this project complete the next one for me is going to be far less fun.  It is the replacement of the nearly 20 year old cheap, failing, leaking, drafty aluminum windows in the house here.