b'Its important to have the same amountof cutting pressure all the way around.Finish Strong end to clear that amount, said Jamie Dunneback, Stars sales manager for round tools. Lets say some-bodys leaving 2 mm a side to ream and my tools not tool and the material being machined. sharpened to machine 2 mm. That tools going to hit Chatter and poor surface finish might be the resultwhere its not sharpened, and youre going to chip it if too little stock is left for reaming, said Cline, whoor break it.ties the problems to how a tool removes material inHe pointed out that the suggested these cases. stock removal amounts for different You want to cut that material as opposed to rub- materials dont vary much. A general bing it off, he said. Every cutting edge has a certainrule, he said, is to leave about half a amount of edge prep that you need to get past. Andmillimeter per side for a reaming if you dont leave enough material, then youre neveroperation.really cutting. Youre just rubbing, which (produces) aCline said recommended stock lot of pressure and heat. amountsrangefrom0.002"to On the other hand, excessive amounts of stock also0.008" per side, depending on the can cause reaming troubles. material hardness and the size of If theres more stock than whats recommended,the reamer. He added that reducing we have to make sure the tool is sharpened on theunneeded stock by relatively small KOMAPRECISION.COM / 1-800-249-5662 ROTARY TABLESUNLOCK YOUR POTENTIAL TODAY!36SEPTEMBER 2023Reaming.indd 36 8/15/23 3:14 PM'