The first and most interesting part will be finding the material for the squares of your grid. Many sheet materials can be used, but I preffered using street wood (generally Plywood or MDF
) because it is rather abundant, tends to have more intrinsic character, and can be a good way to recycle stuff that already exists on the street.
Just be discriminating when you pick up street wood! It can have embedded hardware which can be extremely dangerous and cause injury when cutting on machines. Materials List
Amount: Approximately 9 Square Feet
Cost: Free, off the street.MDF
Amount: Four strips between 2 and 4 feet long, 3/4" inch to 1 1/2 " inch wide.
Cost: Free, off the street.
Disk Magnets: 3/8" inch x 1/8" inch NdFeB Disc Magnet, Ni-Cu-Ni plated
Amount: Approximately 100
The number of magnets you need depends on the weight of the material you are using and the strength of your magnet. I used four 3/8" x 1/8" magnets on my 7" x 7"squares of 1/2" inch thick Plywood. You may need more or larger magnets for thicker/heavier materials.
Cost: $20 http://www.kjmagnetics.com/proddetail.asp?prod=ZD1http://stores.ebay.com/FORCEFIELD-MAGNETS
Amount: Approximately 9 square feet
The amount you need depends on the overall surface area of your squares. Magnetic sheeting does not have as strong of a force as NdFeB magnetic disks and may not work as well for thicker/heavier materials. I'm suggesting this as an alternative method for those who may not have access to all of the tools necessary for attaching the magnetic disks and have not modeled a version using this material myself.
Cost: $5 per 24" inch x 12" inch sheethttp://www.dickblick.com/zz289/21/
Amount: 1 Quart
Cost: $15 http://lyt.com/
Magnetic Spray Paint
Amount: 1-2 Cans
Cost: $10 eachhttp://www.dickblick.com/zz014/10/
Additional Materials to acquire at your Local Hardware StorePrimer
Paintbrush or Roller
Drill or Drill PressC-Clamps
Optional: Chop saw or hack saw