This is the second installment in my series on how to build a workbench for your airsoft custom gun upgrades.  Part I addressed the basics of tools needed and how to frame the tabletops.

Today, we'll be covering the attachment of the workbench legs, as well as my method for attaching the two 4'x8' framed tabletops together to form an "L" shaped surface area. 

X marks the spot in which I drill one of three holes along the 4' side of tabletop #1.  I will actually drill all the way through the 8' foot side of tabletop #2 as well so that I can insert a 5/8" diameter lag bolt to secure the two tabletops together.
See?  That's a 5/8" drill bit designed to bore holes in stuff. 
I used a standard drill and there you can see what the lag bolt with nut and washer look like. 
I actually had to drill through from the other side I had initially planned on going through first, so I missed my mark by a smidge, but luckily this procedure did not require precision craftsmanship. 
I'm sure the pros would tell you that you need a washer on this side of the wood, but I failed to buy enough washers when I was at the hardware store and after close examination, the head of that bolt has a circumference that is sufficiently larger than the circumference of the hole I just drilled in the wood, so chances are, since this table is stationary, I probably won't run into an issue with this. 
Below, I also bought the wrong length lag bolts, so I ended up cutting three spacers out of excess 2x4s that I've now accumulated from this project to use up the extra length of the lag bolt.  I attached each of the three new 2x4 spacers to the inside of the 8' side of tabletop #2.  This proved to be a relatively perfect solution to an otherwise annoying issue. 

I did have one washer left from the small batch I purchased, so this is probably closer to the textbook way to doing this. 
Pardon my shallow depth of field, but you can kind of make out the other two lag bolts that are helping to secure the two frames.

Attaching the Legs:

First I had to do some measuring while sitting in my chair to determine how tall I want this space.  I opted to go for a height in between the level at which most people would find comfortable while sitting, and the level at which most people might care to stand at the workbench.  Perfect for me because I can comfortably sit at this desk, but can also stand at it without having to bend very far over to deal with parts & tools.

Anyway, so I took my 4"x4" sticks and cut them up (after measuring, of course) and attached them to the framed tabletops.  In the photo below, you can see one of the corners where I have screws going all over the place.  The two screws on the very left are helping to secure the short side of the frame.  The two srews that are on the right are what's securing the leg to the inside of the table frame.  There are two more screws going into this leg, just like the side we're currently looking at.                                                                                                              
I also put one screw  down into the top of the 4x4 post where you see that super sweet black oval looking thing. 

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