Holesaws up to 32mm fit straight on to the tube notcher arbor and 33mm upwards use the thread adaptors.
These holesaws will fit all standard type Starrett, Morse etc Arbors. DO NOT USE WD40 as it will encourage rub and does not enhance cutting.
half trigger on the slow setting of a battery drill) and use a thick cutting lubricant such as Rocol RTD or a tapping oil / paste. Remember to keep the speed slow (300rpm which is appox. If you are making race car wishbones or aircraft parts these are for you. These 8-12tpi (teeth per inch) are perfect for our hole saw tube notcher range for customers that are notching tubes of 16 gauge (1.5mm) or thinner where the 6tpi Starrett saws can snag. We have been looking for a while for some fine tooth hole saws to prevent snagging on thin gauge materials. They will cut mild steel, aluminium, stainless, 4130 and T45. This gives them excellent strength, durability and shatter resistance. German made Coba-Tech™ 8-12tpi (teeth per inch) Fine Tooth Hole Saw.Ĭoba-Tech™ Bi-Metal Hole Saws are constructed of hardened, heat and abrasion resisting high speed steel teeth with a tough alloy body and cap. English Wheels & Planishing Hammers SparesĬoba-Tech 8-12 TPI Fine Tooth Holesaws (price is for 1 saw only).Belt Sanders, Linishers & Grinders Spares.Shrinker Stretcher Tooling & Accessories.
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