Tolex the Back Panel
Once patched, you can start the Tolex process. This is time consuming, and I would recommend doing it in a dust free place with plenty of ventilation. The cement fumes are rather strong. I ordered 3 yards of this Tolex and it worked perfectly.
I started with the back panel, and if I made a mistake, it wouldn’t be readily visible. You’ll need about a quart of contact cement for this process. Don’t use regular glue that will harden. This is the contact cement I ordered, and it was very manageable.
Paint the cement on the canvas side of the tolex, and the wood you’ll attach it to. Let both pieces sit for about 5-10 minutes until both sides are tacky. Then apply evenly from one side to another pushing out air bubbles as you go. I wrapped my tolex around the back panel by about 3 inches and then trimmed it to a 1 inch overlap. Tape each side down until the cement dries, just to keep a tight bond. On the corners, make one cut 45 degrees outward, then overlap the two flaps, and make another 45 degree cut through both pieces to give yourself a perfect seam as shown below.
Masking tape holds the Tolex while the cement dries 
Inside view of the speaker jack hole 
Finished corner inside
Tolex the Rest of the Body
After getting the hang of things on the back panel, you can move to the body of the cabinet. I chose to do this with one seam on the bottom, and roll the whole cabinet in one big long piece of Tolex. I started with the bottom, followed the instructions above, and then moved over to the side, the top, the second side, and then back to the original start.
Now I have all the panels Tolexed, but the sides and corners need to be glued. This is a slow process that can only be done properly by being careful and deliberate. The straight sides are easy, but the angle of the slant in the cabinet will naturally create a bubble at that point. I had to slice across the bubble with a blade, and manually make a small seam there on the point of the cabinet angle. It’s visible, but only when you look hard.
Start with the bottom, about 1″ from the edge 
As each panel gets glued, rotate the cabinet 
All four panels are glued now, and a single seam is on the bottom 
Your back corners will look like this 
Cut a single 45 degree cut outward, to make two flaps 
Overlap the two flaps, and then make one 45 degree cut from the corner inward through both pieces of Tolex 
You now have a perfectly matching seam 
Glue the seam and butt each piece up to the next perfectly 
Your front seams will have an extra lip for the frame, and will require two angles in each cut 
One 45 degree angle, and a vertical will allow for a perfect seam on both the outer and inner frame 
At the angle in the cabinet, you’ll have to create a small seam with your blade and manually maneuver the Tolex to fit best here
