Composites Reference Charts
Free, printable shop charts for fiberglass and resin work: laminate thickness, cloth weights, MEKP dosing, resin compatibility and more. Each one matches our calculators.
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All 6 charts as print-ready PDFs. Enter your email and the download links open right here.
Fiberglass Laminate Thickness Chart
How thick each ply of cloth, 1708, mat, roving, carbon, Kevlar and Coremat cures, how many plies build 1/4 and 1/2 inch, and the resin each ply takes.
Plan your exact stack in the layup builder · How many layers for a boat repair
Fiberglass Cloth Weight Chart
Woven E-glass and S-glass from 3 to 40 oz with the weave, industry style number, g/m², thickness and resin demand, so you can match a spec or pick a cloth for the job.
MEKP Catalyst Chart
The MEKP dose for polyester, vinyl ester and gelcoat from 4 oz to 5 gallons, adjusted for shop temperature and kept inside the 1 to 2 percent safe band.
MEKP calculator for any batch size · Shop polyester resin and MEKP
Resin Compatibility Chart
Which resin bonds to cured polyester, cured epoxy, wood and metal, which works with chopped strand mat, and what can go over it. Pin it next to the resin shelf.
Knots to MPH Chart
Boat speed from 1 to 50 knots in miles per hour and kilometers per hour. One knot is 1.15078 mph.
Layup Schedule Worksheet
A printable shop form to plan and log a layup ply by ply: resin, batches, temperature, thickness and a pre-layup checklist.
Use these charts on your site
Teachers, clubs, forums and builders are welcome to use any chart on this page. Use the embed code under the chart, or download the image and credit Boat Suppliers with a link to this page. Please do not edit the numbers.