Fully Symmetrical, Semi-Symmetrical or Flat Bottom Airfoils (26 Airfoils)
Tapered Wing Cores
4.0" to 6.0"
Constant Chord EPS
2 Piece Core set, 1 right, 1 left with beds. CNC cut from 1# Virgin EPS Foam. You select Wing Span, Chord length and Leading Edge size with your order.
6.25" to 8.0"
Constant Chord EPS
2 Piece Core set, 1 right, 1 left with beds. CNC cut from 1# Virgin EPS Foam. You select Wing Span, Chord length and Leading Edge size with your order.
8.25" to 10.0"
Constant Chord EPS
2 Piece Core set, 1 right, 1 left with beds. CNC cut from 1# Virgin EPS Foam. You select Wing Span, Chord length and Leading Edge size with your order.
10.25" to 12.0"
Constant Chord EPS
2 Piece Core set, 1 right, 1 left with beds. CNC cut from 1# Virgin EPS Foam. You select Wing Span, Chord length and Leading Edge size with your order.
Tapered EPS Cores
These cores have many uses. They can be used to build wings, or tail surfaces for Model airplanes and UAV's. These cores are hot wire cut from virgin 1# EPS foam on our precision CNC foam cutting equipment.
You can select any of the 26 different airfoils shown on this page for your cores.
Chord lengths range from 4" up to 12" and wing spans of 24" to 72".
All Taper EPS cores are delivered as a 2 piece set of 1 left and 1 right hand core. Cores are shipped in their wing beds or shucks, and delivered to your door in 10 days or less from the receipt of you order.
To order, select from the chord length groups below. You will enter the chord length you need, the wing span, Taper Style, Taper Amount, Airfoil and leading edge size if you plan to use a balsa leading edge cap strip.
Click on the "Add to Cart" button to add your selection to the shopping cart.
4.0" to 6.0"
Taper EPS Cores
2 Piece Core set, 1 right, 1 left with beds. CNC cut from 1# Virgin EPS Foam. You select Wing Span, Chord length, Taper Style, Taper amount and Leading Edge size with your order.
6.25" to 8.0"
Taper EPS Cores
2 Piece Core set, 1 right, 1 left with beds. CNC cut from 1# Virgin EPS Foam. You select Wing Span, Chord length, Taper Style, Taper amount and Leading Edge size with your order.
8.25" to 10.0"
Taper EPS Cores
2 Piece Core set, 1 right, 1 left with beds. CNC cut from 1# Virgin EPS Foam. You select: Wing Span, Chord length, Taper Style, Taper amount and Leading Edge size with your order.
10.25" to 12.0"
Taper EPS Cores
2 Piece Core set, 1 right, 1 left with beds. CNC cut from 1# Virgin EPS Foam. You select Wing Span, Chord length, Taper Style, Taper amount and Leading Edge size with your order.
EPS foam is made from small beads of plastic that are expanded, then molded into large blocks or billets. It is typically used for insulation or packaging, but many years ago, modelers found that it made an excellent core material for wing building due to it's light weight and high compressive strength.
EPS foam cores are typically covered with balsa sheeting. Some builders will use a balsa leading edge cap that is glued on after the sheeting has been applied. You can specify the size of this cap strip as part of your order and we will trim the leading edge of the cores for you.
EPS foam cores can also be covered with low temperature covering films such as Ultracote and/or Color Tape. This method works well for small electric powered models and gliders. EPS foam cores can be vacuum bagged with balsa sheeting, fiberglass or carbon cloth and Epoxy resins.
EPS Quick Order Cores are available as Constant Chord or Tapered cores with any of the 26 airfoils shown on this page.
EPS or EPP, which is best? Click here for help in choosing foam type.
CONSTANT CHORD EPS Cores
These cores have many uses. They can be used to build wings, or tail surfaces for Model airplanes and UAV's. These cores are hot wire cut from virgin 1# EPS foam on our precision CNC foam cutting equipment.
You can select any of the 26 different airfoils shown on this page for your cores.
Chord lengths range from 2" up to 12" and wing spans of 24" to 72".
All Constant Chord EPS cores are delivered as a 2 piece set of 1 left and 1 right hand core. Cores are shipped in their wing beds or shucks, and delivered to your door in 10 days or less from the receipt of you order.
To order, select from the chord length groups below. You will enter the chord length you need, the wing span, airfoil and leading edge size if you plan to use a balsa leading.
Click on the "Add to Cart" button to add your selection to the shopping cart.
EPP or EPP....Which foam is best?
Which foam will work best for your project will depend on several factors:
EPS - Expanded Polystyrene
+ Low cost
+ Rigid Foam (High Structural Strength)
+ Cover with Balsa Sheeting, Fiberglass or Carbon
cloth, Color tape, or Low Temp coverings
+ Works well for small or large wings
+ Compatible with Epoxy or Polyurethane Glue
- Not compatible with CA or Goop Glues
+ Can be Vacuum Bagged
EPP - Expanded Polypropylene
+ High cost
+ Impact resistant
- Low Structural Strength
- Reinforcement required for most wings
+ Cover with Shipping Tape or Low Temp coverings
+ Works well for small wings.
- Does not scale up well
+ Compatible with Epoxy, CA or Goop Glues
- Not Compatible with Vacuum Bag methods
Do not purchase these items for delivery to Alaska or Hawaii. Click here for instructions on how to order for delivery to Alaska and Hawaii.
Note: We do not ship outside the United States.
Flying Foam
Online Purchases
The Quick Order Core sets listed on this page can be ordered for delivery to the 48 Continental United States.
Do not purchase these items for delivery to Alaska or Hawaii. Click here for instructions on how to order for delivery to Alaska and Hawaii.
Shipping costs starting at $12 per order and sales tax for Texas residents will be added at check out.
Purchases selected from this page will be purchased through PayPal using your Credit card or existing PayPal account.
To order from this page, add your choice to the Shopping Cart, then click on the "View Cart" button. You will be prompted for your Shipping location, and billing information within the secure PayPal system. You may adjust quantities in the Shopping Cart.
We will confirm your order via Email the next business day. Online orders will ship 1 or 2 days after receipt via Fedex Ground. Please allow up to 5 business days for delivery.
If you plan to sheet your EPS cores with balsa or thin plywood sheeting, it can be difficult to wrap the sheeting around the leading edge of the core without it cracking or splitting.
In this case, It is common to use a leading edge cap strip of balsa wood that is added after cores have been sheeted.
You can select the size of this leading edge cap strip when you order your cores. Select zero for a fully rounded leading edge if you do not plan to use a leading edge cap strip.
If you plan to cover your cores with fiberglass or carbon cloth and resin, you will typically not need this feature.
