The Goal: To build, using materials that will be salvaged or bought as economically as possible. 

We have attempted to keep a list of all materials used in the construction of the observatory. Both purchased and salvaged. We will be updating this list as materials are purchased or obtained.

Dome Building Supplies

7/16" thick, 4x8 sheet OSB for Geodesic Dome 7 sheets @ $8.00/ea $56.00
1/4" thick, 4x8 sheet CDX Plywood for Dome Shutter (doors) 1 sheet @ $24.00ea $24.00
3/8" thick, 4x8 sheet CDX Plywood for Dome Base 1 sheet @ $20.10ea $20.10
Epoxy Resin 1-1/2 gallon kits (2 to 1 ratio) 4 kits @ $68.00ea $272.00
Fiberglass Chopped Stranded Mat 1.5oz   9"wide roll $40.00
Fiberglass Chopped Stranded Mat 1.5oz   10 pounds scrap triangles $23.50
Fiberglass Cloth 1/2oz    
1/2" sheet metal screws  4 boxes  
Polyurethane Oil Based Porch and Floor Paint  2 gallons @ $25.00/gal $50.00
Latex Paint (funky dark blue from a past project)   3/4 gallon $0.00
Penetrol paint conditioner - 1 quart 1 quart @ $9.98 $9.98
Total $495.58
Observatory Building Supplies
7/16" thick, 4x8 sheets of OSB 15 Sheets @ $7.08ea $106.20
7/16" thick, 4x8 sheets of OSB 5 Sheets @ $7.33ea $36.65
1/4" thick, 4x8 sheets of OSB 4 Sheets @ $7.33ea $31.52
3/4" thick, 4x8 sheet CDX Plywood for 2nd floor 1 sheet @ $35.88ea $35.88
8 foot x 9 1/2" tall  TIG engineered joists 24 @ $1.00 ea (yard sale) $24.00
2x4x8 fir stud 42 @ $1.68ea $70.56
2x4x8 fir Stud 30 @ $1.79 $53.70
2x6x8  fir for floor joists 4 @ $4.25ea, 2 @ $6.49ea $29.98
2x12 end cuts for stairs (salvaged from construction site) Free $0.00
Tamko Window Wrap 6" x 75ft roll $19.49
32" Steel Entry Door with lockset and keys  Free $0
4 ft wide x 25 ft long Stucco Wire  2 rolls @ $25.00ea $50.00
15lb Roofing Felt  4 squares roll $18.00
Stucco Cement 2 bags @ $10.00 $20.00
Portland Cement 5 bags @ $9.37ea $48.85
#6 x 1-5/8" Drywall Screws  3lb @ $2.99/lb $8.97
2-1/2" Deck Screws 5lb @ $2.99/lb $14.95
2" Deck Screws 2lb @ $2.99/lb $5.98
3" Deck Screws 2lb @ $2.99/lb $5.98
Glue - Titebond II, waterproof, exterior grade 1 gallon @ 20.00 $20.00
Liquid Nails, 10.5 oz cartige $6.49 ea $6.49
7 ft diameter x 14 ft long underground fuel storage tank  Free $0.00
12 inch diameter steel pipe for pier Free $0.00
Total $607.20

Electrical, Wiring and Dome Control

3 inch Fixed Casters from Harbor Freight for dome rotation 12 @ $1.99 ea $24.00
3/8 x 2-1/2" Carriage Bolts for Mounting Casters 1 box $16.49
3/8" bolts for Mounting Rollers 2 boxes $12.58
3M 5200 Marine Sealant   $22.00
Gas Hatch-Back Risers for Dome Slit Door Lifts Free from Old Subaru $0.00
Drive Chain #35 and Sprocket   $49.00
12V Electric Car Jack   $40.00
Cat 5 Ethernet cable 250 ft @ $27.00, 150 ft @ $26.00 $58.00
Electrical receptacles  10-pack  $3.33
12-2 Copper Electrical Wire 50 feet $32.96
14-2 Copper Electrical Wire 50 feet $26.97
Electrical Receptacle Boxes 10 @ $0.25 $2.50
Total $287.83
Total Materials to Date $1390.61
Materials list updated 11/22/08