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TERF Beech Wood Joining Biscuits Review: Are No.20 Biscuits Right for Your Joinery?

TERF® 50 Pcs High Quality Beech Wood Joining Biscuits Size No - 20
4.5
[50-Pack Beech Biscuits]  Includes 50 high-quality beech joining biscuits for multiple projects and replacements.
[100% Compressed Beech]  Durable compressed beech wood ensures strong, long-lasting joints.
[Diagonal Grain Strength]  Diagonally routed grain maximizes strength in any jointing position.
[Exact Size No. 20]  56mm x 23mm size fits standard No.20 slots for consistent alignment.
[Consistent 4mm Thickness]  Compressed to 4mm for reliable glue-up with PVA and snug, stable joints.
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Joinery supplies designed to deliver consistent, strong biscuit joints for furniture and framing work. TERF Beech Wood Joining Biscuits promise uniform size and grain orientation that make alignment straightforward and joints reliable. Are these No.20 biscuits the right match for your next workshop project?

⚡ At a Glance
  • Joint Strength: Diagonal grain pattern cut to maximise strength in any jointing position
  • Best for: DIY woodworkers and small-scale furniture builders needing sturdy glued joints
  • Not ideal for: Very fine, invisible joinery where biscuits would remain visible

Diagonal grain cutting and compression create reliable glued joints. Size No.20 biscuits measure 56mm x 23mm with a 4mm compressed thickness, intended for consistent performance with PVA adhesives.


Accurate panel alignment – with standard No.20 dimensions

Each biscuit measures 56mm by 23mm with a 4mm compressed thickness, matching the slots cut by standard No.20 biscuit joiners. Consistent dimensions reduce play in the slot, helping mating faces register cleanly.

Quicker, neater glue-ups and less sanding to correct misalignment, ideal when matching edges and panels during assembly.

Predictable joint locking – thanks to compressed beech construction

Biscuits are made from 100% compressed beech, compressed to 4mm for uniform density. Contact with PVA adhesives causes controlled swelling, filling the slot and tightening the joint.

Strong, repeatable joints form after glue-up so glued assemblies hold reliably under normal furniture loads.

Workshop-ready supply – with a 50-piece pack

The pack contains 50 high-quality beech biscuits, cut with a diagonally running grain for consistency across pieces. The quantity suits multiple small projects or several repair tasks without frequent reorders.

Convenient for weekend projects and small production runs, allowing preparation of several joints without interruptions.

✨ The 4 Key Reasons for TERF Beech Wood Joining Biscuits
  1. 50-piece pack – Provides enough biscuits for multiple small to medium projects
  2. Standard No.20 size (56 × 23mm) – Works with most common biscuit joiner slots
  3. Compressed beech construction – Ensures consistent swelling and tighter glued joints
  4. Diagonal grain cut – Improves shear strength across varying joint orientations
📋 Technical Details at a Glance
  • Material: 100% compressed beech
  • Size: No.20
  • Dimensions: 56mm x 23mm
  • Thickness: 4mm (compressed)
  • Pack quantity: 50 pieces
❓ Frequently Asked Questions

Q: What size are these joining biscuits?

A: Size No.20, measuring 56mm by 23mm with a compressed thickness of 4mm.

Q: Are these biscuits suitable for furniture work?

A: Yes, the diagonal grain cut and compression make them suitable for smaller furniture projects through to heavier framing work, when used with PVA adhesives.

Q: What adhesive should be used with these biscuits?

A: PVA adhesive is specified for use, as the biscuits are compressed to swell and form a solid joint when in contact with PVA.

🏆 Our Verdict

Ideal for home woodworkers and small-scale furniture builders who need dependable, repeatable biscuit joints. Consistent No.20 dimensions, compressed beech material, and diagonal grain cutting deliver reliable alignment and strong glued connections. Competitive value and durable construction make the pack a practical long-term supply for routine joinery tasks.