Very new to milling and have a general question about milling tools. I have a small Servo Products mill that has a max collet size of 1/4" but think the question would apply to larger machines too. I picked up a few end mills and they have fairly short cutting length - for example, a 1/4" diameter with 1/4" shank and 1/2" cutting length. What is good practice for milling a 1" deep pocket? I can get up to 3/4" cutting length and maybe a bit longer but the point is for a pocket deeper than readily available end mills cutting length. (I realize there will be deflection on this small shank at this depth so will need to take small cuts.) If I go deeper then the shank may rub against the side of the pocket and the chip exit will be restricted too - how bad is this? Are end mills bigger than the shanks readily available? Or is there some other solution to this?