Custom Airframe Cutting for Fiberglassed Rockets: A Guide
By High Power Model Rocketry | Published: 2026-10-18
Category: How-to Guides
Learn how to get precise custom airframe cutting for your fiberglassed model rocket tubes. This guide covers ordering, measuring, and common mistakes.
Quick answer
Order custom airframe cutting for your fiberglassed tubes by specifying the tube, lengths, and number of cuts. This service saves time and ensures clean, square cuts.
Why use custom cutting instead of DIY
Fiberglassed airframes are tough and abrasive, making them difficult to cut cleanly with hand tools. A saw kerf from a custom cut is minimal and consistent, preventing ragged edges that can compromise glue joints or fin alignment.
Custom cutting also eliminates the risk of cracking or delaminating the fiberglass layer, which can happen if you clamp too hard or use a dull blade. For complex builds requiring multiple tubes cut to exact lengths, this service streamlines the process.
Measuring accurately before ordering
Measure the overall tube length and mark the exact cut points with a fine-tip marker. Remember that each cut removes a small amount of material (the saw kerf), so account for this if you need multiple pieces from one tube.
Double-check your measurements against your rocket plans. A common mistake is forgetting to include the depth of couplers or bulkheads when calculating piece lengths. It is better to cut a piece slightly long and trim it, than to end up with a piece that is too short.
How to order custom airframe cutting
- 1. Measure and plan your cuts: Determine the total number of cuts needed and the desired length of each resulting piece. For example, if you need two pieces from one tube, that is one cut. Write down the tube identifier (e.g., PML 3" fiberglass tube) and the lengths in inches. Common mistake: forgetting to account for the saw kerf width. If you need two pieces exactly 12 inches each, order a cut at 12 inches from one end; the second piece will be slightly shorter by the kerf width.
- 2. Add the cutting service to your cart: Add the "Custom Airframe Cutting - Fiberglassed Airframes" product to your cart. In the quantity box, enter the total number of cuts you need (not the number of pieces). Checkpoint: one cut produces two pieces, two cuts produce three pieces, etc. Verify your quantity before checkout.
- 3. Provide cutting details at checkout: In the Custom Order Details section, specify: 1) which tube to cut (include its diameter and length), 2) length of the first piece from one end, 3) length of the second piece (if applicable), and 4) length of the third piece (if applicable). Any fall-off pieces will be shipped to you. Common mistake: not specifying which end to measure from. Always state "from the forward end" or "from the aft end" to avoid confusion.
- 4. Review and place your order: Double-check that your measurements and cut count match your rocket plans. If you also need slots, consider adding the laser slotting service for glassed tubes up to 3.9" to consolidate shipping. Allow 3-5 business days for custom slotting if ordered together; cutting may be faster. Plan your build timeline accordingly.
Product facts
- Custom Airframe Cutting - Fiberglassed Airframes: PML will cut your Fiberglassed Airframes for you. Simply enter the total number of cuts you need in the quantity box, then indicate in the Custom Order Details which tube to cut and the lengths of each piece. This saves you from buying a specialized saw blade and avoids the risk of chipping the fiberglass coating during a DIY cut.
Custom Airframe Cutting - Fiberglassed Airframes - Custom Laser Airframe Slotting up to 3.9" Fiberglassed Airframes: Laser slotting is available for glassed cardboard and phenolic tubes up to 3.9", priced per slot, with a 3-5 business day turnaround. If your build also needs slots for fins or rail buttons, you can combine cutting and slotting in one order to reduce handling time and ensure alignment.
Custom Laser Airframe Slotting up to 3.9" Fiberglassed Airframes
