Thursday, May 31, 2012

So fa So good


My all new handmade sofa is finally a reality !.

I had a cane sofa that served us well through the last 8 years. Years had taken its toll on it and offlate, it used to look so bad that guests started pausing for a moment to think when they had to take seat!.

Heeding to the ever increasing demand from my better half for a new sofa that looks civilized enough, I thought of making one. Though a crazy idea at first, as time went past, it looked feasible. Several designs were considered and thrown out. That's when my friend pointed me to this : http://ana-white.com/2010/11/build-your-own-storage-sofa.html

Though I borrowed the concept of the storage sofa, I wanted to stick to plyboard and did not want to use timber as she used in her designs. So I redesigned the backrest and the joins to the rest of the structure. Added hand rests. It turned out to be good and we got oodles of space underneath the seat for storage.

Some Photos of the finished product



 
And here is the design. It's no CAD file – all done using paper and pencil.

Overall Architecture
Design took a lot of effort. Eeach piece to be cut was drawn on paper with its accurate dimension and each piece was mapped to a particular board. So, while cutting, I could just see the mapping and cut the board without going through the design again and again.


Detailed Design
Notice how the numberings and the letters A,B,C,D in the design shown above are mapped to rubberboard and plyboards. 

All required pieces are mapped on to the wood as shown below:

Now the design for each piece of wood

Overall Design at the bottom of the diagram - with hand rests
Hand rest design
Structure Under Construction
My little helper learns to fix screws.
Wooden structure ready and is being measured for upholstery works

Foam cutting and stitching in progress
Tools Used
  1. Circular Saw/ cutter
  2. Electric Drill
  3. Wise (for keeping the wood fixed while cutting)
  4. Measuring Scale
  5. Measuring Tape
  6. Right Square
  7. Planer (Manual)
  8. Hammer
  9. Screw Driver
  10. Spirit Level
  11. Carpenter's wax
 
Materials & Cost for the Structure
Wood & Other items:-
3/4” Plyboard 6x4 – 1 Nos
1/2” Plyboard 6x4 – 1 Nos
3/4” Rubberboard 8x4 – 1 Nos
3/4” Blockboard 6x4 – 2 Nos
Screws – Lost count of it
Lid Handle – 1 Nos
Hinges – 3 Nos
Paint – 1/2 Ltr (for interiors)

Materials Cost Breakup
Wood, Screws – Rs. 9300
Transport & Handling – Rs. 250
Screws, Hinges & Handle – Rs. 210
Paint – Rs. 257
Total Cost for the structure – INR 10,017

Upholstery



When I started off, I had some idea on how to do the upholstery all by myself, without any need for stitching. However, by the time the wooden structure was over, I got a feeling that it may be worthwhile to get professional help in doing this part. And it paid off. Any imperfections of doing a DIY job on this final piece of work would have been very glaring. 

Upholstery Cost Breakup (As given by the contractor)

Seat – 4” - Density 40 – Rs 2200
Back rest – 4” Density 32 – 1700
2” Density 32 - 700
1” Density 32 – 360
1/2” foam 2sheets - 360
Adhesive solution 1 Ltr - 180
Cushion cloth - 4Mtr – 280
Cloth Cover – 9 Mtr (@Rs 450) – 4050
Labour – 3500
Total Cost 13,300

Total cost : INR 23,317. Not bad for the quality of materials used and for the  storage space it will provideMore than the cost, the feeling of having built it all alone is priceless.
Revelation: Do you know that those good looking sofas in furniture showrooms are mostly made of packing wood (relate to the tomato boxes) ? Not to mention they cost a bomb

Mistakes & Lessons
1. The overall height of the sofa could have been lesser by a few inches. 
2. Blockboard could have been used instead of rubberboard which would have reduced the weight of the structure. 

Next Project: Computer cum study table. Should be simpler than this !