Circular saw blade Proxxon 28020 — replacement blade for compact precision saws

Proxxon 28020 — replacement circular saw blade for compact precision saws, designed for fine, accurate cutting in small-scale woodworking, model making and workshop tasks. The blade is 50 mm in diameter with a 10 mm bore and is manufactured from an alloy with a high proportion of tungsten, vanadium and molybdenum to provide an even microstructure, high hardness and extended service life. Its fine-toothed geometry is optimised for very fine cuts in non-ferrous metals such as aluminium, brass and copper, while remaining suitable for cutting composite circuit boards, wood and a variety of plastics.

Advantages

The alloy composition ensures consistent hardness and wear resistance, giving the blade a long operational lifetime even under frequent use. Fine tooth pitch provides clean, burr‑free cuts in thin metal sheets and delicate model parts. Compact 50 mm diameter and 10 mm arbor bore match many precision saws, enabling straightforward replacement and stable mounting. Versatility across materials — non-ferrous metals, plastics, wood and circuit board laminates — reduces the need for multiple specialised blades during detail work.

Suitable for

• Fine cutting of aluminium, brass and copper components
• Model making and scale woodworking
• Precision trimming of plastics and composite circuit boards (PCBs)
• Workshop tasks requiring a compact blade for small saws

Key specifications

• Diameter: 50 mm
• Bore (arbor) diameter: 10 mm
• Material: alloy with high tungsten, vanadium and molybdenum content
• Tooth type: fine-toothed geometry for very fine cuts
• Suitable materials: non-ferrous metals (aluminium, brass, copper), wood, plastics, composite circuit boards

How to use

Fit the blade onto a compatible compact precision saw using the 10 mm bore and ensure the blade is correctly seated and securely fastened following the saw manufacturer's instructions. Select appropriate rotational speed and feed rate for the material: lower speeds and light feed for non-ferrous metals and circuit boards, slightly higher feed for wood and plastics. Support the workpiece steadily and use suitable clamping to prevent vibration or movement. Inspect the blade before each use for signs of wear or damage and replace if teeth are chipped or the cutting performance degrades.

Usage recommendations

Use cutting fluid or light lubrication when machining non-ferrous metals to improve surface finish and extend blade life. Avoid lateral side pressure on the blade; allow the teeth to do the cutting with steady, controlled feed. Store the blade dry and protected from impacts to preserve tooth geometry and hardness.