Repair guide
How to bond leather to a steel plate
For a leather panel bonded flat to a rigid steel plate, two-part epoxy gives the strongest joint. If the leather has to bend where it meets the metal, use a flexible contact adhesive instead.
The short answer
Abrade the steel to bright metal, rough the flesh side of the leather, and bond with a two-part epoxy for a flat, rigid mounting. Where the leather will flex at the joint, such as a strap, switch to a flexible contact adhesive or a purpose-made leather adhesive, because epoxy cures hard and the leather will tear along the edge of the rigid patch.
- Difficulty
- Moderate
- Time needed
- 30 minutes work, 24 hours cure
- What you need
- Two-part epoxy or a flexible leather adhesive, 80 and 120 grit abrasive, isopropyl alcohol, roller, flat weights, gloves
The question that decides this job is whether the leather moves. Bonded flat to a plate, held rigid, it behaves like any sheet material and epoxy gives a strong durable joint with plenty of body to cope with leather's uneven back. Bonded at a point where it has to flex, epoxy creates a hard boundary and the leather fails right beside it, usually within weeks.
Leather also varies more than most materials. The flesh side, the rough inner face, takes adhesive far better than the finished grain side, which is often coated with pigment, wax or a topcoat that behaves as a release layer. Bond to the flesh side wherever you can, and if you have to bond the grain side, abrade the finish off first.
Tanning matters too. Chrome-tanned leather is oilier than vegetable-tanned, and heavily oiled or waxed leathers do not bond well with anything. A wipe with isopropyl alcohol removes surface oil, but a leather that has been fed with dubbin for years may never take a strong bond.
On the steel side the usual rule applies: abrade to bright metal and bond the same day.
Step by step
- Decide whether the joint has to flex. If it does, use a flexible leather or contact adhesive rather than epoxy.
- Abrade the steel bonding face with 80 grit to bright metal, then degrease with isopropyl alcohol.
- Rough the flesh side of the leather with 120 grit to raise a slight nap.
- If you must bond the grain side, abrade the finish off it until the surface is matt.
- Wipe the leather lightly with isopropyl alcohol to lift surface oil and let it dry.
- Mix two-part epoxy and spread a thin layer on the steel.
- Lay the leather on and work it down from the centre outwards with a roller.
- Weight it evenly rather than clamping hard, and leave 24 hours.
What to avoid
Do not use epoxy where the leather flexes. It tears at the edge of the rigid patch.
Do not bond to a waxed, oiled or heavily finished grain side without abrading it. The finish will let go of the leather.
Do not clamp leather hard under a rigid clamp. It compresses and keeps the mark permanently.
Adhesive can darken or stain leather permanently, so test on an offcut or a hidden area first. Uncured epoxy irritates skin and is very difficult to remove from leather, so mask the visible face.
The full bonding guide
Everything about gluing Mild steel to Leather
Last reviewed 13 September 2026.