A lot of the techniques for shaping this inside back have already been discussed at length in the inside arm Blog. I’m going to skim over a few details until I get to something different.
I’ve got some loose synthetic burlap on the back of the chair.
It’s happens to be the only ‘material’ I kept. I removed the staple holding the top half.
I cut myself some 2”ish inch wide by 2” inch thick foam strips.
I just stapled them securely to the top to give a true curved shape.
On the back side, under the curve, I added a hunk of foam that was a about 1.5 X 2. I only stapled it to the upper board.
Now I pulled that burlap up and around the top. It doesn’t reach all the way but it does reach one of the boards. I’ll just staple the burlap to that one.
Now I’ll staple it to the sides of the inside back.
I’ve got a little excess so I’ll just give it a snip.
Remember my burlap on reached to a board on the back, starting from that board, I’ll finish the wrap.
Here is our shaped back.
Now let’s get some padding on the chair. I measured all the way around the formed back without padding and got 35 inches.
The I threw a piece of scrap foam over the curve, re-measured and got 46 inches.
Neither measurement is correct, The piece of foam I bought is 82 inches long by 30 Hmmmm. Half of 82 is 41.
That is really close to splitting the difference. Ok – Let’s go with it! Typically – You add 2/3 the difference to the shorter measurement.
Uh oh, we need a width. Measure the widest part. I’ve got 27 and the foam is 30 wide. Good enough!
Ok now – we don’t need scientific or even woodworking accuracy for this. Just measure and mark with a pencil or score it with a scratch awl if you like.
I just used my scissors to cut it.
Alrighty then, I threw the foam on the chair and overlapped the width by about a quarter inch. I curved it around the back and added several staples. I went up pretty high on the wood and I only caught about 3/4 inch of foam. at the very edge.
Try to get yours to look like this.
You can staple the rest if you like what you see.
Staple the foam straight up the side now.
You can now compress the foam and add a second set of staples. Watch what happens as I compress the top one section at a time.
That little bubble you see toward the edge is quite thin and will be upholstered out.
The foam was too wide so I cut off all but 1/4 inch of the excess on the other side.
I snipped the foam right were the back meets the top of the arms.
I snipped a couple of small rectangles out of the corners where the arm and back meet the seat. The snips will decrease bulk in those corners. Even with the snips the foam is still about an inch wider than the measurement from arm to arm.
I tucked the foam into the sides and just left it hanging at the bottom center.
That’s all I did.
I SHOULD have added a layer of Dacron to the top of that. That meant I would not have enough to finish the chairs and I would own almost a full roll that I have no plans on using in the near future. But still I SHOULD have nonetheless.
We’ll get busy upholstering that back in the next blog. The staples will fly!!!
-- Thanks for all the lessons!