Question 1

What is the difference between a bolster chisel and a masonry chisel?

Accepted Answer

A bolster chisel has a wide, flat blade (typically 50–100mm) designed for splitting bricks, cutting through block courses, and removing large sections of material in a single blow. A masonry chisel is a broader term covering all chisels designed for use on stone, brick, and concrete — including narrow pointing chisels, plugging chisels for raking mortar joints, and cold chisels for breaking hard material. In practice, most people use "masonry chisel" and "bolster chisel" interchangeably for the wide-bladed type, but if you're buying for a specific task like joint raking, you'll want a narrower plugging chisel rather than a bolster.

Question 2

What hammer weight should I use with a masonry chisel?

Accepted Answer

For most masonry chisels, a 1.5kg club hammer is the standard recommendation and covers the majority of general work including brick splitting, mortar raking, and light concrete breaking. Lighter hammers (around 1kg) suit detailed or precision work where control matters more than force. For hard stone or heavy demolition, stepping up to a 2–2.5kg lump hammer delivers more energy per blow — but using an oversized hammer with a lightweight chisel risks damaging the striking head and accelerates mushrooming. Always match the hammer weight to the chisel's specification.

Question 3

How do I know if a masonry chisel's striking head is safe to use?

Accepted Answer

Check the striking head for mushrooming — this is where the edges have spread outward and curled from repeated hammer impacts. A mushroomed head is a safety hazard because metal fragments can break off during use. Run your thumb around the edge of the striking head: it should feel flat and even, with no raised or curled lips. If you see significant deformation, the chisel should be dressed with a grinding wheel or replaced. This is particularly common on budget chisels with soft, unhardened striking heads, which is why specifying a hardened and tempered head matters when buying.

Question 4

Is chrome vanadium steel worth paying more for in a masonry chisel?

Accepted Answer

Yes, for anything beyond very occasional use. Chrome vanadium steel holds its edge significantly longer than standard carbon steel and resists chipping when it contacts hard aggregates or flint inclusions in masonry. The practical difference shows up after the first few jobs: a carbon steel blade will need dressing or sharpening noticeably sooner. Most of the Draper Tools range in the mid-price tier uses chrome vanadium, which is one reason they represent such good value — you're not paying premium prices for a material that's now fairly standard in the mid-market.

Question 5

Can I use a masonry chisel with an SDS rotary hammer drill?

Accepted Answer

Only if the chisel is specifically designed for it. Standard hand-struck masonry chisels are not compatible with SDS rotary hammers — the shank design, steel temper, and fatigue resistance are all different. SDS chisels have a specific shank profile (SDS-plus or SDS-max) that locks into the hammer's chuck. Using a hand chisel in a power tool is dangerous and will damage both the tool and the chisel. Makita and DeWALT both produce SDS-compatible chisels, and these are what you'll find at the higher end of this category's price range.

Question 6

Are cheap masonry chisels from budget brands worth buying, or should I avoid them?

Accepted Answer

For a single, non-critical job they're acceptable — but approach them with realistic expectations. The main failure modes on very cheap chisels are: striking heads that mushroom after a handful of blows, blades that lose their edge quickly on hard masonry, and handles that split or crack under sustained use. Brands like Yato and Brilliant Tools at the lower end of this catalogue are honest budget options for light work, but if you're spending a weekend splitting bricks or raking out an entire wall of pointing, the false economy becomes obvious quickly. Spending a little more to reach the 8 £–11 £ range gets you a meaningfully better tool.

Question 7

How should I maintain a masonry chisel to extend its life?

Accepted Answer

Three things matter most: keep the blade edge dressed, protect the steel from rust, and monitor the striking head. Dress the blade edge with a bench grinder or angle grinder when it becomes blunt or chipped — a sharp chisel requires less force and is safer to use. After use in damp conditions, wipe the blade dry and apply a light coat of oil to uncoated steel to prevent rust; nickel-plated or chrome-plated blades need less attention here. Inspect the striking head regularly for mushrooming and grind back any spread edges before they become a hazard. Store chisels individually or in a roll to prevent blade-on-blade contact that dulls edges prematurely.

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