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Description
Mechanical edge finder – precision setup tool for CNC and conventional milling machines
Mechanical edge finder is a precision measuring tool for quickly setting the X and Y axis zero points on conventional milling machines and CNC machining centers. This milling setup tool enables accurate positioning of the spindle relative to the workpiece edge with a repeatability of 0.01 mm — without an external power supply.
Key advantages of the milling setup tool
- Measurement repeatability of 0.01 mm — ensures precise zero point setting even in demanding operations
- Straight shank 10 mm — versatile mounting in ER collets, Weldon holders, and drill chucks
- Hardened steel construction, 58-62 HRC — provides wear resistance and a long service life for the contact tip
- Operation at 400-1000 rpm — a clear visual indication (kick-out) upon contact with the workpiece edge
- No power supply or electronics — mechanical reliability without the risk of battery or circuit failure
The edge finder is suitable for toolrooms, maintenance departments, and any application requiring fast, repeatable axis zeroing. It is chosen by CNC operators and milling machinists who value ease of use and dependable measurement.
How the edge finder works
The edge finder consists of two coaxial components connected by a spring: a shank held in the spindle and a movable contact tip. As the spindle rotates at 400-1000 rpm, the tip rotates eccentrically relative to the axis. Contact with the workpiece edge produces the characteristic axial alignment of both components — visible as a distinct kick-out of the tip. This visual indication tells the operator the exact position of the edge relative to the spindle axis.
The distance between the spindle axis and the workpiece edge then equals the radius of the contact tip (typically 5 mm for a diameter of 10 mm). The operator reads the position on the machine display and adds the radius to obtain a precise zero point.
Practical workshop applications
The mechanical edge finder is used for more than just setting the zero point. Experienced operators also use it for:
- Locating hole centers — by approaching opposite edges of the hole and calculating the midpoint
- Locating scribed lines — precise positioning relative to previously scribed marks
- Checking workpiece parallelism — verifying workpiece alignment relative to the machine axis
- Centering the spindle over a specific point — for drilling and milling operations requiring accurate positioning
Tips for proper operation
Follow a few guidelines to achieve maximum measurement accuracy. The spindle speed should be within 400-600 rpm — excessive speed makes it difficult to see the moment of alignment. Feed the table toward the edge slowly and steadily, preferably using the handwheels or the lowest automatic feed rate.
Before measurement, remove chips and dirt from both the contact tip and the workpiece edge. Even minor contamination can affect reading accuracy. After each use, wipe the edge finder with a clean cloth and store it in protective packaging.
Who is the edge finder intended for?
The edge finder is suitable for professional toolrooms, maintenance departments, and any application requiring fast, repeatable axis zeroing. It is chosen by CNC operators and milling machinists who value ease of use, mechanical reliability, and dependable measurement without relying on batteries. It is essential equipment for every milling workstation — for both one-off and series production.
Frequently asked questions
It is used to precisely set the X and Y axis zero points on milling machines. It also allows you to locate the material edge, hole center, and scribed lines.
The recommended speed is 400-600 rpm, not exceeding 1000 rpm. Lower speeds ensure a more visible tip kick-out and greater accuracy.
Standard repeatability is 0.01 mm; high-grade versions offer 0.005 mm. This is sufficient for professional zero point setting on CNC machines and conventional milling machines.
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Shipping
All orders are delivered by courier company GLS. For orders exceeding 369 PLN gross shipping is FREE
| Courier GLS | Przelew24 / Prepayment | 14,76 zł gross | Delivery time 1 working day |
| Courier GLS | Cash on delivery | 17,26 zł gross | Lead time 1 working day |
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