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9/32″ Down-Cut Spiral Bit – 1/2″ Shank – Whiteside RD4800 (AstraHP Coated)

AstraHP Coated Solid Carbide 9/32″ cutting diameter 1/2″ shank 1″ length of cut Down-cut 3” overall length Made In USA #row-413159831 > .col > .col-inner { padding: 20px 0px 20px 0px; } #section_1419280007 { padding-top: 45px; padding-bottom: 45px; } @media (min-width:550px) { #section_1419280007 { padding-top: 65px; padding-bottom: 65px; } } @media (min-width:850px) { #section_1419280007 { padding-top: 2px; padding-bottom: 2px; } }

9/32″ Down-Cut Spiral Bit – 1/2″ Shank – Whiteside RD4800 (AstraHP Coated) - Main image
$60.99 $99.99 In stock

Category: Down-Cut CNC Bits

This Whiteside RD4800 is a 9/32-inch down-cut spiral bit with a 1/2-inch shank, featuring an AstraHP coating. Designed for CNC routing, the down-cut geometry helps produce a clean top edge on your workpiece while minimizing tear-out.

  • Down-cut spiral design directs chips downward, reducing surface splintering.
  • AstraHP coating enhances durability and helps resist heat buildup during use.
  • 1/2-inch shank offers stability in CNC routers and other compatible tooling.
  • 9/32-inch cutting diameter suits detailed or medium-duty routing tasks.
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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.8 / 5 · 5 reviews)

Timothy ★★★★★

I was worried the down-cut design might leave a messy edge, but this bit cuts through plywood like butter and the coating really helps keep it from gumming up. The 1/2-inch shank gives it great stability even at higher speeds.

Owen H. ★★★★★

The AstraHP coating on this bit is noticeably slicker than the uncoated ones I've used—chip ejection is much cleaner in the collet. It left a glass-smooth top edge on my plywood sign lettering after a full pass without any burning.

Joseph L. ★★★★★

Cut my handrail profiles yesterday and the down-cut geometry kept the top edge razor clean, zero fuzz even on tricky grain. The AstraHP coating still looks brand new after a full day of routing. This one's earned a permanent spot in my CNC tool drawer.