How to tolex a guitar amp cabinet

Author: Kevin M  Date Posted:5 May 2018 

How to Tolex a Cabinet

A step-by-step beginner's guide on tools, glue, measuring, corner cutting, and wrapping techniques.

One of the top questions I get is how to tolex a cab or what glue to use. Below is detailed information covering the overall process, products, and tools needed. Consider this page a guide—there are many valid techniques depending on your workspace setup and experience level.

This tutorial is designed as a beginner course, assuming one person is carrying out the work alone.

A Few Tips Before Starting

  • Pick a black tolex like Nubtex or Bronco: While bright colors or snakeskin patterns are tempting, black is far more forgiving for beginners and hides minor imperfections well.
  • Smooth prep work: Ensure your cabinets are sanded completely smooth with rounded edges.
  • Dust removal: Wipe off all sanding dust. A cloth damp with methylated spirits will pull away fine particles left behind after brushing.
  • Test fit metal corners early: Check that your corner hardware sits completely flush before applying any tolex. If necessary, sand/trim extra wood from the cabinet corners until they fit properly.
  • Pre-paint interior: Paint the inside of your cabinet black ahead of time.

Tools Required

  • Felt-tip pen
  • Straight edge ruler (at least as long as your cabinet’s total width)
  • Good quality scissors
  • Lino/inking roller or a smooth silicone block with slightly rounded edges
  • A few 3" and 1" inexpensive paint brushes
  • Appropriate contact adhesive/glue
  • Amp hardware (Tolex, corners, feet, screws, handle)
  • A heavy-duty, sharp utility knife (e.g., Stanley knife with fresh blades). Avoid thin snap-off utility blades as they flex during precise cuts.
Tolex Knives

Choosing the Right Glue

While various adhesives are available, we recommend Selleys KwikGrip for consistent results:

  • Standard Tin (Recommended): Great overall performance and bond strength.
  • Gel Formula: Allows slightly longer open work time.
  • Spray Adhesive: An expensive and messy alternative (a 1L tin of KwikGrip is usually sufficient for an entire amp head, whereas spray cans deplete quickly).
Tolex Glue Options

Marking Out the Tolex

Example Dimensions: Cabinet measuring 425mm Wide x 250mm High x 250mm Deep (using a piece of tolex measuring 1350mm x 1000mm).

Pro Tip: To remove wrinkles or memory creases from new tolex, lay the material flat in direct sunlight for 10–30 minutes before cutting.

  • Clear a large, clean, flat workbench space.
  • Lay the tolex out flat. Position the cabinet 50mm in from the top and side edges. Trace one side, the top panel, and the opposite side.
Tolex Measurements Part 1
  • This leaves a primary main piece marked out to approximately 1025mm x 350mm.
Tolex Measurements Part 2
  • Cut a second separate piece measuring 525mm x 300mm to cover the bottom panel.
  • Trace your layout lines cleanly on the backing material so you know precisely where to apply glue without wasting product.

Applying the Glue

  • Thoroughly stir the KwikGrip glue before application.
  • Using a 3" brush, apply a thin, even layer to the larger piece of tolex, staying within your marked boundary lines.
  • Ensure the coat is even (roughly the thickness of thinly spread butter) without over-brushing, which can cause contact cement to clump.
  • Apply a matching layer of glue to the top and side surfaces of the cabinet.
  • Apply glue to the smaller bottom piece of tolex.
  • Crucial Step: Allow all glued surfaces to dry until tacky and touch-dry (no wet residue on fingers).

Wrapping & Joining

  • Align the side panel of the cabinet onto the marked tolex. Ensure alignment is square so the material rolls straight.
  • Roll the cabinet onto its top panel, then over onto the second side panel.
  • Flip the cabinet upright onto its bottom, then firmly roll/press the tolex down with your roller or silicone block to work out any air pockets.
  • Apply a thin layer of glue along the bottom wood panel and adjacent inner lips. Let dry until tacky.
  • Fold the overlapping side flaps onto the bottom panel without applying excessive force.
  • Lay the final separate bottom piece of tolex over the top of the folded side flaps.
  • Using a sharp straight edge and utility knife, cut cleanly through both layers at once along the seam.
Tolex Seam Cutting Part 3
  • Peel off the top scrap strip, lift the main edge slightly to pull out the under-layer scrap, then press both fresh edges together for a tight, invisible seam.
Tolex Seam Joining Part 4

Corner Relief Cuts

Relief cuts allow the tolex to fold clean and flat around inner corners:

Corner Cut Diagram 1 Corner Cut Diagram 2
  • Apply glue inside the cabinet edge (approx. 20–25mm deep) and onto the corresponding tolex flaps.
  • Once tacky, firmly pull the flap over the lip and smooth it down into the cabinet interior.
  • Trim excess corner overlaps as shown in the diagrams below:
Corner Cut Layout Part 5
Corner Cut Layout Part 6

Video Walkthroughs

Visual demonstrations are helpful when learning corner cuts and seam joining. Below are selected video references demonstrating various professional cabinet covering techniques:

Amplified Nation Cabinet Covering

Bottom Cut & Double-Cut Seam Method

Uncle Doug - Detailed Corner Cuts (Part 1)

Uncle Doug - Curves & Finishing (Part 2)

Grille Cloth Application Example: