Why a hook rather than a straight blade?

Because a hook cuts on the pull stroke. A straight blade pushed at hard underfill skids, and on a logic board it skids into the components next to the chip. A hook bites and draws the glue away instead.

Do these need a holder?

Yes — they are blades. Pair them with the 2UUL MicroFix carbon fibre holder or a compatible micro blade handle.

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2UUL BL01 MicroFix Hook Blades 4pcs/Set

Name: 2UUL BL01 MicroFix Hook Blades 4pcs/Set
Brand: 2UUL
SKU: 2UUL-BL01
Price: 1200 PKR
Availability: InStock

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A four-piece set of hook-profile micro blades.

Rs 1,200

A four-piece set of hook-profile micro blades. The cutting edge is on the inside of the curve, so the blade pulls towards you rather than pushing forward. That…

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A four-piece set of hook-profile micro blades. The cutting edge is on the inside of the curve, so the blade pulls towards you rather than pushing forward.

That geometry is the whole point on a logic board. A straight blade pushed at underfill wants to skid across the board and into whatever is next to the chip; a hook bites and draws the glue away from the component instead.

Key features

Inside-curve hook edge — cuts on the pull stroke
Four blades per set
Sized for work between board components

What this is used for

Removing underfill from around a CPU
Clearing black glue between components
Pad cleaning before reballing

Who it's for

Micro-soldering technicians cleaning underfill off logic boards.

Manufacturer description

A four-piece set of hook-profile micro blades. The cutting edge is on the inside of the curve, so the blade pulls towards you rather than pushing forward. That geometry is the whole point on a logic board. A straight blade pushed at underfill wants to skid across the board and into whatever is next to the chip; a hook bites and draws the glue away from the component instead. • Inside-curve hook edge — cuts on the pull stroke • Four blades per set • Sized for work between board components Compatible with: 2UUL MicroFix holders and compatible micro blade handles.