To improvise harness from available materials, sort every part into one of three roles: strong load-carrying straps and traces from leather, seatbelt webbing, flat-weave fire hose, canvas or chain; soft padding wherever anything touches skin from wool, sheepskin, felt or foam; and fastenings a hand can release. A breast harness for a shaft cart has 7 straps before bridle and reins, so count and gather them before you start.
Part of Harness & Yoke Making
Building harness when leather and purpose-made parts are scarce: how to classify salvaged materials by the job each part does.
Every Harness Part Does One Of Three Jobs
An improvised harness fails in predictable places: a strap that breaks, a surface that rubs, or a fastening that cannot be released. Sorting the parts by job tells you which material belongs where, so that a good strap material is not used as a skin-contact surface and a soft material is not asked to carry the pull.
| Role | What it must do | Candidate materials |
|---|---|---|
| Load path | Carry the pull without stretching or parting | Leather, seatbelt webbing, flat-weave fire hose, multi-layer canvas, chain, strong rope |
| Contact surface | Spread pressure on skin and keep it dry | Sheepskin, wool, felt, closed-cell foam under a cloth cover, straw (short-term) |
| Fastening | Hold, adjust and release | Buckles, hooks, pins, quick-release knots |
The details are in Leather Alternatives and Padding & Cushioning. Leatherwork itself is covered in Leatherwork.
What You Need
- A parts list for the harness you are building.
- Salvage — vehicle seatbelts, fire hose, canvas, rope, chain, foam.
- A needle and thread, or rivets — see Saddle Stitch and Riveting and Lacing.
- The animal’s measurements.
Method: Improvise In Order
Step 1: List the parts. For a collar harness: collar, hames, traces, hame straps. For a breast harness on a shaft cart: breast strap, traces, surcingle, belly band, back strap, and breeching.
Step 2: Assign materials by role. Use the table above. Paracord’s inner strands make decent light lines but are not strong enough for traces alone.
Step 3: Pad every contact point. Padding prevents every type of harness injury. Cover raw edges and seams.
Step 4: Test unloaded, then lightly loaded. Walk the animal with no load, then with a light one; check straps lie flat and nothing pinches.
Step 5: Check the skin afterwards. Hair loss, heat or swelling means a contact point needs padding or a strap needs moving.
Worked Example
Count the straps for a breast harness on a shaft cart: breast strap 1, traces 2, surcingle 1, belly band 1, back strap 1, and breeching 1.
- Total: 1 + 2 + 1 + 1 + 1 + 1 = 7 straps, not counting the bridle and reins, which this article does not cover.
- The breast strap must be at least 8 cm wide, so that one piece cannot come from narrow webbing without a wider pad underneath.
Count straps before cutting: it shows whether one salvaged seatbelt or hose is enough.
Common Mistakes
- Using a good strap as a contact surface — it rubs; pad it.
- Putting soft material in the load path — it stretches or tears.
- Forgetting the releases — every fastening that holds the animal to a vehicle must be releasable.
- Skipping the unloaded test — rubs show up before the pull does.
Safety
Improvised harness fails differently from leather
Rope and some synthetics can stretch and part suddenly under a peak load, and synthetic webbing does not break away in a wreck. Inspect every strap and joint, keep a sharp knife on the handler, and rig a quick release at the hitch so a bolting animal can be freed from the vehicle.
What’s Next
- Learn next: Leather Alternatives — the load-path materials in detail
- Combine with: Padding & Cushioning — the contact-surface materials