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guides:materials [2007/06/27 18:34] – Added info about polyfoam rocketboyguides:materials [2013/01/13 09:27] (current) – [Glues] rocketboy
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 **Cutting:** STYROFOAM™ brand foam cuts easily with a serrated knife, hacksaw, etc.  Wax the knife blade with an old candle for easier, smoother cuts **Cutting:** STYROFOAM™ brand foam cuts easily with a serrated knife, hacksaw, etc.  Wax the knife blade with an old candle for easier, smoother cuts
  
-**Painting:** Paint with an acrylic craft paint. Solvent-based paints may damage the foam+**Painting:** Paint with an acrylic craft paint. Solvent-based paints may damage the foam.  Daler Rowney System 3 acrylic paint works well and comes in Fluorescent Pink (other colours are available).
  
 **Gluing:** For a fast, sure bond, use a low-temperature glue gun. Hot glue guns can be used but the hot glue may melt a small portion of the foam **Gluing:** For a fast, sure bond, use a low-temperature glue gun. Hot glue guns can be used but the hot glue may melt a small portion of the foam
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 Polystyrene foam tends to be difficult to glue - because the solvents in some glues attack it. Here are 3 glues that work well and don't attack polystyrene. Polystyrene foam tends to be difficult to glue - because the solvents in some glues attack it. Here are 3 glues that work well and don't attack polystyrene.
 +
 +**UHU Por glue** - this is specifically for polystyrene foam.  Coat each part, wait for 10 minutes then press together.
  
 **PVA wood glue** - this works but you have to allow a long time for it to dry - especially on thick sections. Allow at least a day when working with sections of 1" or more. **PVA wood glue** - this works but you have to allow a long time for it to dry - especially on thick sections. Allow at least a day when working with sections of 1" or more.
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 **Silicone Rubber** - as used for sealing plumbing & worktops - allow 24 hours to set. **Silicone Rubber** - as used for sealing plumbing & worktops - allow 24 hours to set.
  
-**Hot Glue Gun** - set quickly and are relatively easy to apply.+**Hot Glue Gun** - set quickly and are relatively easy to apply. Use the gun on its low heat setting.
  
  
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 Indicative strength (natural colour): Indicative strength (natural colour):
  
-^Diameter^Breaking Strain^ +^Diameter^Breaking Strain^ 
 +|1.0 mm|22 Kg| 
 +|1.2 mm|35 Kg| 
 |1.5 mm|45 Kg| |1.5 mm|45 Kg|
 |2.4 mm|130 Kg| |2.4 mm|130 Kg|
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 Braided cord works better than twine as twine tends to twist/untwist during the flight - causing the payload to spin. Braided cord works better than twine as twine tends to twist/untwist during the flight - causing the payload to spin.
 +
 +===== Tapes =====
 +
 +==== 2" Wide Tape  ====
 +
 +Various 2" wide sticky tapes often used for covering payloads etc.
 +
 +^Tape Type^Weight (g/m)^
 +|White Duck Duct| 12 |
 +|Grey Generic Duct| 9 |
 +|Black Cheap Generic Duct| 7 |
 +|Ultratape single sided cloth tape| 7 |
 +|Aluminium| 6 |
 +|Spinnaker Repair| 5 |
 +|Clear Packing (Staples)| 3.5 |
 +|Pro-Gaff Fluourecent Pink Gaffer| 16g |
 +
guides/materials.1182969252.txt.gz · Last modified: 2008/07/19 23:30 (external edit)
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