First thanks to Rob for the clarification on the differents type of washers. In hardware store over here the package don't say if it is SAE washers or USS washers. The wholsalers over here probably buy those in bulk and do re-packaging in 10, 25, 50, 100 units per box without any obligation of saying if it is SAE or USS standard...
I'm still working on the test assembly of my kit, cut by a local custom CNC owner.... I know, I know, I'm slow, but reading all the infos on this board, working on a project of stripping 20,000 square feet of paint applied in the '70 over a master piece of "Fresco Secco" painting of the 19 century in a church done by one of our master painter(Meloche) and working full time reproducing bird eyes maple faux finish on 13" base board, doors casing, doors and and casement windows of a 19 century Manor 30' x 80 ' take most of my time....
Tonight was my first night off this week.
Since I found out McMaster will not ship in Canada the nice L-Bracket Rob choose for the assembly.... I start sourcing for some.... in vain, none of the suppliers I could think of, have any....I can see "German Thistle" rolling into their eyes when ask for those L-Brackets .
I know I have some L-Brackets somewhere in my shop.... but where ???????
Opening all the drawers in my shop tonight, I finally found it, they are differents from the one Rob find, but they will work, here's a pic of those L-Bracket:

At first I could not remember where I get it from...... But after a while (one beer).....
Here's where I get it from:
Home Depot ???
In fact not realy... I get it from a job where all the electrical box have to be surface wall box.... The electrician leave those L-brackets in the garbage box.... I could not see any metal or Alum in garbage box it drive me crazy so I bring it home...
Here's a link to home depot electrical box:
http://www.homedepot.ca/product/gangable-steel-device-boxes-with-ac90-cable-clamps-150-2-1-2-inches/977513
Home Depot US or Lowes probably have those box too....
If you have access to McMaster, the L- Bracket Rob find are cheaper than those box... but for us in Canada at least we can have our L-Bracket and electrical box for future project at the home depot.....
See You
FAb
