Metrology: Mitutoyo QuantuMike 0-1" Overview (Order Number 293-180-30)

[@FredFlintstone21]

The quantumike is amazing! Just got one for Christmas!

[@thequinnreapernovaco.7497]

Merry Christmas, and enjoy your new QuantuMike!

[@codprawn]

Does your spindle move in and out a bit - almost like backlash? My quickmike does and I think it may be faulty. Display moves as much as 20 thou and you can feel it moving in and out with light finger pressure. Seems to repeat ok though so maybe it is a feature of the quickmike system?

[@johncoston8018]

I wanted to order these out of my tool fund at work but my lead told me he crashed his spinning it too fast and I decided against them. Maybe for my second pair?

[@thequinnreapernovaco.7497]

As you can see from the video, it’s very easy to crash the QuantuMike. I was surprised just how fast they are! But no less accurate. So as along as you’re careful and aren’t hasty, QuantuMikes are excellent. TBH, since I’ve acquired the QM, I almost never use my standard mike when taking measurements of parts on the lathe-too slow! I’ve relegated my standards mike to bench quality control only. There’s no harm in having both models of mikes so long as you know each is best suited to certain tasks. It really doesn’t take that much time to get used to the faster spindle speed. And even though more care is needed-the time saving with the QM over the long run still makes it worth it.

[@barryorbik215]

@@thequinnreapernovaco.7497 what you mean by crash the mike, is it damaged

[@thequinnreapernovaco.7497]

@@barryorbik215 The term “crashed” when applied to machining tools generally means an uncontrolled or unexpected contact between to parts, tools, or surfaces, such that damage results. I can’t speak for the John Coston, but I believe in his context he was describing how someone he knew damaged the mike by spinning the two anvils together in an uncontrolled manner. This could damage both the anvils, the threads or both.

[@codprawn]

I just bought a used Quickmike - very disappointed as there is backlash in the spindle. Can you push your spindle in and out a bit and feel it move? My cheap digital mike doesn't move at all when I try this.

[@thequinnreapernovaco.7497]

Backlash in the spindle itself, that does not sound normal. As in there’s aft and fore play along the axis of the spindle? If so, do the number change based solely on moving the spindle with your fingers? There may be some play in the rotating friction sleeve on the handle of the spindle where you turn, but there should be zero play of any kind on the actual measuring part of the spindle and/or anvil side. Do you have a calibrated 1” standard to test? You mentioned the mike is used. It’s possible it’s damaged. If you can, make a quick video so I can see what’s going on.

[@codprawn]

@@thequinnreapernovaco.7497 Thanks for the quick reply. Yes the actual spindle moves in and out by gentle finger and thumb pressure. I thought perhaps the preload would allow for this but I am getting a few tenths difference every time I measure a gauge block. Seller has agreed to a refund and return. I will go for a new Quantumike - they are cheaper than a Quickmike and seem to move nice and fast anyway. Thanks again!

[@thequinnreapernovaco.7497]

@@codprawn Happy to help! Glad to hear the seller will do right by you. There should definitely never be any need to “preload” the spindle to get an accurate measurement with any mike. In fact, the whole purpose is to impart as little force as possible so as not to compress and throw off any measurement. This is why mikes will have a ratchet or friction sleeves on the part you turn with your fingers so once the anvil makes contact with your part, no more force will be applied than the ratchet or friction slip allows. It keeps force consistent. Even with that slip feature, as my video describes its still very important to be aware of just how fast the spindle can move when turned. As you approach your parts, slow down and be careful. You don’t want your anvil slamming into your part! Such actions could damage the precision threads in the spindle and/or the squareness of the anvils. Good luck and I hope you enjoy your new mike!

[@sameerato]

sir how is buy