Showing posts with label finishing. Show all posts
Showing posts with label finishing. Show all posts

Wednesday, July 27, 2011

Repair and Restoration

Recently I've found another artistic venue -- instead of turning old bombs and car parts into furniture and sculpture, I'm turning old furniture into . . . furniture again.  I'm currently working on a series for clients (and a few for myself) that focus on either repairing old pieces to their former glory or transforming them into something new.  For example:

An original side table, with 'charming' upholstry.
The above table, re-finished and upholstered.

Detail of a Japanese cabinet set (probably from the early 1900's) where the wood panelling had split.  It had been in San Francisco (humid) and moved to Salt Lake City (dry), and the accordingly the wood contracted perpendicular to the grain causing the damage.


One of the really fun parts of restoration is finding the hidden stories of old furniture.  When I disassembled the cabinet doors, I found this writing underneath.  I haven't found someone to translate it yet, but apparently it is very old and contains the character for 'slope' -- perhaps a geographic description of where it was made, or where the wood came from?


An uncommon and difficult joint on the cabinets -- a mitered and tennoned half-lap joint. 

I'm now seeing some of my original pieces from years ago return for refinishing -- this is particularly true of outdoor furniture which sees sun, rain, and snow.

This is the bench re-finished, and now with a coat of ecologically kinder and personally healthier no-VOC finish.


Sunday, January 16, 2011

The Canyon Table, Part 5

Progress on the Canyon Table . . . steel welded legs powdercoated, finishes tested, and lettering applied to the wood top surface.
The Gambel-oak inspired legs back from the powdercoaters.


I like to test the finish variations before applying them to the actual project.  Then I can see how they react specifically with the wood and carving details I'm using.  After many projects I've got a huge library of finish examples.

Applying the lettering on the table top -- these are the names of some of the actual (and most important, in my opinion) locations on this section of the Green/Colorado

Saturday, January 15, 2011

Healthy Chemicals: an Oxymoron?


As my collection of paints, thinners, stains, degreasers, oils, finishes, and primers grew, so did my requirements for masks, gloves, respirators, and flammable cabinet real estate.  It seemed like a good time to reevaluate what chemicals I’m using in my studio and if there was a good way to use fewer toxins in my work and lessen the chance of mushroom clouds appearing in place of my shop (or the change of poisoning myself).  I’m no chemist or environmental scientist, so the information I’ve gathered is a mixture of advertising from environmental paint companies, wikipedia, common sense, and guesswork.

A few guidelines that rose to the top:

1.  It may go without saying, but the more you want to modify a surface from its ‘natural’ state, the more stuff you have to use.  So, the best way to avoid using toxins is not to use chemicals at all, or only use those that protect a surface rather than changing its color/texture.

2.  VOCs (volatile organic compounds) are to be avoided or eliminated where possible.
There are a few sneaky paint manufacturers who advertise “zero VOC” paint, but this is only true for the base color – as soon as you add color tints it emits VOCs.  What numbers constitute acceptable vs. dangerous VOC levels are somewhat a matter of debate, depending on the location of use, sub-category of compound, and how much money the source stands to loose (or make).  From Consumer Reports :

Federal VOC limits are now set at 250 grams per liter (g/l) for flat paints and 380 g/l for others . . . California's standards are stringent: 150 g/l for nonflat finishes and 100 g/l for flat. Even tougher is the 50 g/l level for all finishes set by California's South Coast Air Quality Management District (AQMD), around Los Angeles.

My own experience is that anything over 100 g/l requires a lot of ventilation and zero VOC is by far the best -- I have to evacuate my 400 sqft studio when I use Minwax stains (250  VOC).

3.  Water-based chemicals are generally better than those that require solvents.  When you need to use solvents, use the citrus-based ones.

4.  MSDSs (material safety data sheets) are your friend – there is certain information that manufacturers are required to disclose about their product.  My experience has been that the harder it is to find the MSDS on a manufacturer’s website, the more they have to be chemically ashamed of (are you paying attention, Minwax?)

5.  Some products that seem very similar may in fact have very different properties, even if the change is only color.  Cadmuim oil paints, for example, are toxic.  Titebond II wood glue has fewer health dangers than Titebond I or Titebond III (although III is more waterproof, so you’ll have to evaluate if its is worth the extra risk for the added durability – a trade-off I saw in many wood finish products as well).


A few products that seem promising:

The Home Depot’s FreshAire Choice – I haven’t used it yet but hopefully it signifies that the push for healthy paints isn’t just a niche market/industry.

Vermont Natural Coatings – fantastic customer service, and a product line that uses the byproducts of the cheesemaking process.  I’ve made a few sample pieces and am waiting to see about durability.

BioShield – they use clay pigments in many of their products and have a nice range of wood tints.  Some of the colors I ordered arrived dried-out, so there may be some manufacturing/packaging issues to be sorted out.

Earthpaint – I haven’t tested their finishes yet, but they seem to walk the talk.