Case and Open Skinning
Part of Hunting and Trapping
A clean skin is valuable — for clothing, shelter, containers, cordage, and trade. A badly skinned hide is wasted material full of cuts and attached fat that rots before you can use it. The difference between the two is technique, not talent. This guide covers the two primary skinning methods in detail: case skinning (tube method) and open skinning (flat method), including when to use each, step-by-step cuts, and the mistakes that ruin hides.
Why Skinning Technique Matters
Every cut you make in a hide is permanent. A nick becomes a hole. A hole becomes a tear. A torn hide is weaker, harder to tan, and less useful for every downstream application — clothing, leather, rawhide lacing, water containers, drum heads, shelter panels.
Beyond the hide itself, proper skinning preserves the meat underneath. Careless knife work gouges muscle tissue, creates pockets where bacteria collect, and wastes edible protein. In a survival situation, you cannot afford to waste either the skin or the meat.
The two methods below cover every animal you are likely to encounter, from squirrel to deer.
When to Use Which Method
| Method | Best For | Result | Downstream Use |
|---|---|---|---|
| Case skinning | Small to medium animals (rabbit, squirrel, fox, raccoon, muskrat) | Tube-shaped skin, fur side in | Fur garments, pouches, small bags, mittens |
| Open skinning | Large animals (deer, elk, boar, cattle) and any animal where you need a flat hide | Flat rectangular hide | Leather, rawhide, shelter panels, blankets, large containers |
Rule of thumb: If the animal is small enough to hold in one hand while working, case skin it. If it requires hanging or laying on the ground, open skin it.
Method 1: Case Skinning
Case skinning removes the hide as a single tube, like pulling off a sock. The fur ends up on the inside, which protects it during drying and storage. This is the standard method for all small furbearers.
Tools Needed
- A sharp knife (smaller is better — a large blade is clumsy on small animals)
- A sturdy branch or gambrel for hanging
- Cordage to hang the animal by its hind legs
- Clean surface or container for the hide
Step-by-Step Process
Step 1. Hang the animal by its hind legs. Tie cordage around both hind legs above the ankle joint and suspend from a branch at comfortable working height (chest to chin level). The animal hangs head-down.
Step 2. Make the first cuts — rear legs. Starting at the inside of one hind leg at the ankle, cut through the skin (not the muscle) down the inside of the leg to the vent (anus/genitals). Repeat on the other hind leg. The two cuts meet at the vent, forming a V-shape.
Step 3. Cut around the ankles. Make a circular cut through the skin around each hind leg at the ankle. This frees the skin from the feet.
Step 4. Cut around the tail base. Cut the skin around the base of the tail. For animals with bony tails (squirrel, fox), you can pull the tail bone out of the skin by gripping the base and pulling steadily. For thick-tailed animals (beaver, muskrat), cut the tail off entirely.
Step 5. Begin peeling. This is where case skinning differs from open skinning — you pull, not cut. Grip the freed skin at the hind legs and peel downward (toward the head). Use your thumbs and fists to separate the skin from the muscle, working it down like removing a tight sweater.
Warning
Use the knife only where the skin is attached by connective tissue that will not release by pulling. Every knife stroke risks cutting the hide. Pull first, cut only when necessary.
Step 6. Free the front legs. When the skin reaches the front legs, work each leg out from inside the tube. Cut around the ankle of each front leg to free the paw. Pull the leg through.
Step 7. Peel over the head. Continue pulling the skin down over the neck and head. Cut carefully around the ears (cut close to the skull, not the skin). Cut around the eyes (follow the eye socket rim). Cut around the mouth and nose at the cartilage.
Step 8. Final separation. The skin comes free as a complete tube — fur on the inside, flesh side out.
Stretching and Drying
After case skinning, the hide must be stretched to dry properly:
- Make or find a stretching board — a smooth, tapered board roughly the animal’s body width and 1.5 times its body length. A forked branch works in a pinch.
- Slide the skin onto the board fur-side-in (flesh-side-out).
- Pull it taut and tack or tie the edges if needed.
- Dry in shade with good airflow. Direct sun causes brittle, cracked hides. Drying time: 2-5 days depending on humidity.
- Scrape off any remaining fat or membrane before or during drying. Fat left on the hide will rot and ruin it.
Method 2: Open Skinning
Open skinning splits the hide along the belly, producing a flat sheet. This is the standard method for large game and any situation where you need flat leather or rawhide.
Step-by-Step Process
Step 1. Position the animal. For large animals, hang by the hind legs from a sturdy gambrel (a strong branch through the ankle tendons works). For very large animals you cannot lift, lay on the back and prop with rocks or logs to keep it stable.
Step 2. Make the primary cut. Starting at the inside of one hind leg at the ankle, cut through the skin down the inside of the leg to the center of the belly. Continue down the belly centerline from the vent to the chin. Then cut up the inside of each front leg from the belly to the ankle. This creates a T-shaped or cross-shaped cut pattern.
Step 3. Cut around all four ankles with circular cuts.
Step 4. Begin separating. Starting at the hind legs, peel the skin away from the muscle using a combination of pulling and careful knife work. Work from the top down if the animal is hanging, or from the centerline outward if it is on the ground.
Step 5. Use the fist technique. For large animals, push your closed fist between the skin and the muscle. The connective tissue tears away cleanly in most places. This is faster than cutting and produces fewer nicks in the hide.
Step 6. Work around difficult areas. The skin is more tightly attached along the spine, around the head, and at the joints. Slow down in these areas and use short, careful knife strokes close to the body (not close to the skin).
Step 7. Remove the head skin if desired — same technique as case skinning (cut around ears, eyes, mouth).
Step 8. Lay the hide flat, flesh-side-up.
Fleshing the Hide
Whether case or open skinned, the hide must be fleshed (cleaned of all fat, meat, and membrane):
| What to Remove | Why | Method |
|---|---|---|
| Fat | Rots, attracts insects, prevents tanning chemicals from penetrating | Scrape with dull blade, bone scraper, or rock edge |
| Meat scraps | Rot quickly and create weak spots | Pull off or scrape |
| Fascia (thin membrane) | Prevents tanning agents from reaching the skin | Scrape firmly after stretching |
| Sinew | Save it — do not discard (see Waste Nothing) | Peel off carefully in strips |
Warning
Always scrape from the center of the hide outward toward the edges. Scraping toward the center bunches the hide and creates wrinkles that become permanent when dry. Use a dull edge — a sharp blade cuts through the hide.
Common Mistakes
- Cutting too deep. The number one error. The skin is thinner than you think, especially on small animals. Use only the tip of the blade and apply minimal pressure.
- Pulling when the skin is cold. Warm hides peel more easily. Skin the animal as soon as possible after the kill while the body is still warm. A cold hide sticks and tears.
- Leaving fat on the hide. Even a thin layer of fat will rot within days, destroying the skin underneath. Scrape thoroughly.
- Drying in direct sun. Sun-dried hides become stiff, brittle, and crack. Always dry in shade with airflow.
- Rushing the head. The skin around the eyes, ears, and nose requires small, precise cuts. Rushing here tears the facial skin, which weakens the entire hide.
- Forgetting the tail. An unskinned tail rots from the inside and ruins the surrounding hide. Always remove the tail bone or cut the tail off.
Temperature and Timing
| Condition | Maximum Time Before Skinning | Notes |
|---|---|---|
| Hot weather (above 25C / 77F) | 30 minutes | Bacteria multiply rapidly; hair slips within hours |
| Cool weather (5-25C / 40-77F) | 2-4 hours | Skin as soon as practical |
| Cold weather (below 5C / 40F) | 8-12 hours | Cold slows spoilage but a frozen hide is very difficult to skin |
| Frozen solid | Thaw first, then skin | Cutting frozen skin damages the fibers |
Key Takeaways
- Case skinning (tube method) is best for small animals — pull more than you cut, and stretch on a board to dry.
- Open skinning (flat method) is for large animals — follow the T-cut pattern along belly and legs, use your fist to separate skin from muscle.
- Skin while the carcass is still warm for easiest separation and best hide quality.
- Flesh the hide thoroughly — all fat, meat, and membrane must be removed before drying.
- Dry in shade with airflow, never in direct sun, and always scrape from center outward.
- Every nick in the hide is permanent — use minimal knife pressure and let pulling do the work.