When the job calls for perfectly flat-bottomed holes with clean edges, the Irwin Marples 1-3/4 in. x 4 in. L Carbon Steel Forstner Drill Bit with a Round Shank delivers reliable precision. Built for woodworkers who demand accuracy, this bit combines durability and the renowned Marples craft to handle hardwoods, softwoods, and plywood with minimal tear-out.
Why this Forstner bit stands out
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Flat-bottom hole quality—designed to produce clean, true-bottom recesses ideal for dowels, hardware housing, and shelf-pin applications.
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Durable carbon steel construction offers dependable performance across a range of woodworking projects and bit profiles.
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Round shank, 3/8"—compatibility with a wide array of standard drill chucks for stable, precise cutting.
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1-3/4" cutter size and 4" overall length provide ample reach for deeper holes while maintaining control and accuracy.
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Part of the trusted Marples line by Irwin, a name synonymous with reliable, well-made woodworking tools.
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Boxed packaging keeps the bit protected during storage and transport, ensuring it’s ready when you need it.
Ideal use cases
This Forstner bit shines in tasks like creating large holes for dowel joints, installing hardware and hinges, routing recesses for handles, or carving clean pockets for inlays. It excels on workpieces where precision matters most—cabinetry, furniture making, and detailed shop projects alike.
Practical tips for best results
- Use a slow to moderate feed rate and steady pressure to maximize clean edge quality and minimize heat build-up.
- Consider a backing board or sacrificial scrap underneath your workpiece to reduce edge tear-out on the far side.
- Keep the bit sharp and free of pitch; a light application of cutting oil or wax can improve performance and extend life in tough woods.
- Deburr the hole after drilling to ensure smooth edges for any inserts or hardware you plan to install.
Specifications at a glance
- Product type: Forstner drill bit
- Brand: Irwin / Marples
- Material: Carbon steel
- Drill size: 1-3/4"
- Overall length: 4"
- Shank diameter: 3/8"
- Shank type: Round shank
- Number in package: 1
- Packaging: Boxed
