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Rebuild & Repair Rope Stropped Block Kits Contact Links


Wondering where to get high quality, custom sized sheaves for your project?

New Build or Refit Mastheads, Blocks, Boomends, Sheet Rollers.

Each custom sheave turned to your specifications.

Fast Turnaround: Small orders delivered within 1 week.

Black Acetal Sheaves
with Bearing Bronze Bushings

Rebuilt Spinnaker Block

Rebuild and Repair

Zephyrwerks offers rebuilding and repair of your existing blocks, jib and genoa cars, and sheave boxes.
Whether you have an old classic wooden yacht, or a modern cruiser or racer, we will help you determine the appropriate materials and methods to put your worn and disabled gear back into action.

Rope Stropped Block Kits

Available in any size up to 4" sheave diameter,
any rope diameter.

We use BLACK ACETAL, also known as Delrin® to make our custom sheaves because it is the best sheave material available:
  • No Corrosion
  • Withstands extreme loading
  • Soft edge profile easy on lines
  • Lightest weight of all sheave materials
  • Axle pins available in Stainless Steel, Silicon Bronze and Titanium
  • Thick walled oil-filled bronze sleeve bearings provide a long lasting, easily replaceable axle bushing.
Split rollerSheet Rollers

Ed Louchard
521 Snagstead Way, Port Townsend, WA 98368
tel: 360 385-2720     email:


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