Battery and Biscuits
Time for some woodworking. I'll start with something simple. A battery box.
But before that a couple cautions.
WARNING: I'm not a carpenter and have had no woodworking training since 8th grade wood shop. I have no idea if I'm doing this the right way much less the best way. You've been warned.
WARNING: Power tools are way dangerous. You can't be too careful. Understand how the tools operate. Read all the literature. Be sure to wear your safety gear.
As you can see from this picture I always wear my safety gear whenever I'm using power tools.
Oh wait, wrong photo.
OK, this one is better. Be sure to wear all of the below gear. Your eyes, lungs, hearing and hands will thank you.
On with the project.
I'm building a box to contain my battery bank. They will be located inside the van. I'm using flooded cell batteries (AKA wet cell or Lead-acid battery) so this will have to be vented. Another design consideration is since it will be located under the sofa-bed it's overall height has be to as low as I can make it.
The batteries will be arranged in this fashion.
Mistake number
1. When you are sliding these 65 pound blocks of lead filled hard plastic around on the floor DON'T GET YOUR FINGERS BETWEEN THEM! Luckily this is not a audio posting.
I'm using furring strips as spacers between the batteries. Since batteries will heat up as they charge I wanted some space between them. Scrap furring strips happen to be the perfect size.
With the spacers the box will be 32" long by 11-1/2" wide and 8-1/2" high before I attach a base.
I'm cutting the box sides from 19/32" exterior pine plywood. The plywood I'm using is left over scraps from the sofa-bed I've also started building. Since it's scraps I won't charge the wood to this post.
After I've cut out the four pieces of wood that will be the sides of the box I have to join them together. I'm be using a biscuit cutter/joiner.
Here's what one I'm using looks like.
This is what the biscuits look like. They come in different sizes.
The way it works is you hold the cutter up against the wood. Then as you press it forward this circular saw blade extends outward and cuts a crescent shaped hole into the edge of the wooden piece.
Into this crescent shaped hole is placed one of the biscuits.
Since this is the first time I'm joining boards this size I had to adjust the joiner so it cut into the center of the board. A piece of scrap works best for this.
The next step is to figure out how many biscuits, what size biscuits and where you want to place them.
I'm thinking three #10 biscuits would be best centered at 1-3/8", 4-1/4" and 6-7/8" measured from the bottom.
This knob adjusts the depth of the cutter head. The deeper the cut the bigger the biscuit.
Since the biscuit cut-outs on each side of the joint have to line up be consistent with your measurements.
Measure and mark the board.
The biscuit cutter has a mark you line up with your mark.
After three cuts and inserting the biscuits it looks like this.
Now that I've made the cuts on the
END of the board I have to make corresponding cuts on the
SIDE of the other board that will make up this joint. The reason I've bolded the text for
END and
SIDE brings me to:
Mistake number
2. Don't get confused about which you should be cutting on the board you are working on. Should you be cutting the
END or the
SIDE? In my case it was back to the table saw for new board.
Here's the underside of the cutter. You'll see this when you cut into the side a board. There is a guide groove you line up with your marks
Here's what the two sides of a joint will look like if you do it correctly.
That's it. Do that again for each of the other three corners. Then just paint wood glue in the cuts, on the biscuits and along the edges where the boards will meet. One advantage of using biscuits is you have some "slop" so you'll be able to move the boards a bit if you need to make adjustments. Use clamps to hold it all together. The more clamps the better.
Be sure to check that all four corners are square. I find that a "speed square" does a great job at checking for this.
Let sit overnight.
continued -
Open the pod bay doors Hal.
Once I exit Hal, this is what I do.
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