May 22, 2019 at 3:10 pm #101310
Hey it’s me again,
I purchased this https://www.amazon.ca/dp/B07C1TBZC3/ref=cm_sw_r_tw_dp_U_x_KFC5CbGN1FKKX and love it so far. But I have a question regarding the collets. They are in metric, save one 1/8″ collet, and I have a bottom cleaning bit for surfacing wood coming in tomorrow via amazon. it is a 1/4″ shank. would the 6.5mm collet be okay to use or should I order a 1/4″ collet?
Jeff.May 22, 2019 at 3:21 pm #101311
I have the same one on our MPCNC and love it. Yes same collet set. For 1/4″ tools use the one that has the snuggest fit when the collet is in the er11 nut, but still pushes in without too much force. 6mm or 6.5mm should be your two options.
I see you’re a fellow Canuck, where abouts are you located? I’m north of the GTA
AndrewMay 22, 2019 at 3:33 pm #101312
Thanks Andrew! I figured as much but having as close to 100% certainty is best when dealing fast spinning sharp things haha! I’m in the west end of Toronto, close enough to Toronto to be a Torontonian but far enough away to not have to deal with the traffic.May 23, 2019 at 8:04 am #101351
We make our own decisions about trade-offs, of course. I personally would get a 1/4″ collet for 1/4″ bits. It should be no problem to source an ER11 collet in that size. A slipping bit could cause poor quality and/or ruin the workpiece. A flying bit rotating at 12k RPMs is serious business.
I realize that .15mm may be within the manufacturing tolerances, particularly for budget collets, so I may be making some invalid assumptions about it making a difference. We do what we can, and what we feel comfortable with.May 26, 2019 at 1:00 pm #101715
I am opting to run my machine in the safest way possible and have not used the 1/4″ bits yet I more than likely will be sourcing out the 1/4″ collet before I attempt to use the bit. A small bit of uncertainty isn’t worth the damage it may cause.
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