b'with identical inserts. Frequently, heallowed by multiple cutting edges. reamers are usually small and lim-said, the key difference between aOn the downside, though, con- ited to compensation for wear. By fine and rough boring tool is the rel- sumable costs associated with acontrast, he said boring tools typi-ative ease of presetting a fine bor- reamer are high compared with in- cally have a much greater adjust-ing tool. dexable inserts on boring tools. ment range and can be used for It might take a lot of trials andWhen (a reamer) has reachedseveral different bore sizes.time in the presetting room to usethe end of its life, Tegelman said, a rough boring tool instead of a fineit is generally recycled or tossed. Best Boring Practicesboring tool, he said. Moreover,hesaidallowableTo boost productivity and re-Tegelman said reamers also cancutting-edgeadjustmentsforduce cycle times, a fine boring tool equal fine boring tools in both accu-racy and finish quality. A reamer typ- Pionex TAPically includes a cylindrical shank and one or more carbide or industrial di-amond cutting edges. Productivity can be high when using multiflute reamers because of the feed ratesTHE NEW GENERATION of THREADING TOOLSThe enhanced coating system applied to DIN spiral ute taps results in reducedTapered thread friction, improved chip evacuation, andimproves chip increased tool life. evacuation.Kennametal The unique properties of the Sirius coating applied to spiral point DIN taps o\x04ers high wear resistance and improved chip evacuation.Newly developed Slidur Consistent cutting edgecoating on ANSI cut taps allows for excellentadds an additional hard coating adhesion. layer of lubricity on top of a TiAlN base for excellent wear-resistance.www.guhring.com(800) 776-6170ctemag.com/cteguide.com33Boring.indd 33 6/17/21 11:04 AM'