DIY Homemade Water Rocket Fins

DIY Homemade Water Rocket Fins

Posted by Relationshipware LLC on 27th Jul 2022

Water Rocket Fin Ideas!
A great feature of the StratoLauncher IV is it enables students and family members to create their own fin and rocket designs by merely screwing on the nozzle and it will launch. Rather then limiting fin design to duct tape and cardboard, encourage your participants to be creative by supplying them with an assortment of materials, adhesives, and tools.

Fin Building Tips:

  1. Chose lightweight stiff materials (balsawood, coroplast, carbon fiber sheet, or gift cards).
  2. Employ a fin jig for evenly spaced and correctly aligned fins.
  3. Position fins as much at the tail of the rocket as possible.
  4. Sand surfaces where adhesive will be applied for greater grip.
  5. If using Loctite PL Premium Polyurethane Adhesive, then allow at least 48 hrs. for curing before use.

Fin Building Material List:

Coroplast sheet
Foam core sheet
Carbon fiber sheet
Gift cards, loyalty cards,
expired credit cards
FTC tubes
Fin alignment and/or
attachment adapter
Manilla folder (create alignment jigs)
9 oz. clear Solo cups
Pool noodles
Narrow venetian blinds
1/4" dowel rods
Wood skewer sticks
Duct tape
Gaffer’s tape
Electrical tape
4” & 8” Zip ties
Assorted nylon screws,
washer, and nuts

Bare wire
Paper clips
Plastic flagging tape
Loctite PL Premium Polyurethane Adhesive


Box cutter
X-acto knife
Vinyl gloves

_______________ Nosecone Materials

Additional soda bottles of all sizes
(0.5L, 1L 1.25L, 1.5L and 2L)
Polystyrene cones
6 oz. paper cone cups

Also, don’t forget to retire and discard those old bottes/rockets from last year that are stressed and deformed from multiple pressurizations. These old stressed bottles may explode even at pressures below 120 PSI. It is always a good idea to start the season off with fresh new bottles.

Corrugated Plastic Sign Boards, Red

ReliaBot 3K Full Carbon Fiber Sheet 100mm x 250mm x 0.5mm

Loctite 1451588 PL Premium Polyurethane Adhesive, 4 oz

Araldite Heavy Duty 2-Part Epoxy Adhesive

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None of the products in the video above were supplied to me from any of these sites or manufacturers. The content was not reviewed or paid for by outside persons or manufacturers.