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  1. Be careful with ER20 flush holders in BT30. The...

    Be careful with ER20 flush holders in BT30. The nut will distort the tool holder taper. Wall thickness is too thin. But if for a digital probe it may not be an issue.
  2. That looks familiar. Interesting... BT30 1/2...

    That looks familiar. Interesting...

    BT30 1/2 END MILL TOOL HOLDER .500-1.2 Made in USA MariTool
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    Tool cribs can be a great tool if you make your...

    Tool cribs can be a great tool if you make your own product or you are a job shop in a certain nitch. But if you are a full blown job shop like what I worked at in my younger years an automated tool...
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    A few months ago we stopped using USPS for...

    A few months ago we stopped using USPS for international. USPS has always been very inconsistent with our international shipments. Our goal besides delivering quality tooling is to deliver them on...
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    If not a repeat job just use Solid carbide. This...

    If not a repeat job just use Solid carbide. This is a new line item for us. Currently we have up to 3/8 shank. 1/2 shank coming soon.


    Carbide Multi Extension Grooving Bars - MariTool
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    Can't go wrong with what Bobw recommended. ...

    Can't go wrong with what Bobw recommended.

    Here is a link to our carbide corncob style roughers..

    1/2 TIALN rougher MariTool

    Nice thing about this one is that the flute length is nice and...
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    I will probably make some when making the 1"....

    I will probably make some when making the 1". Thank you.
  8. YES. Exactly. I don't design any products or...

    YES. Exactly. I don't design any products or fixtures to use 6-32 and in the past when working in a job shop we quoted higher for parts that had 6-32 threads.
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    Busy making tool holders, whats up? I have no...

    Busy making tool holders, whats up?

    I have no problem helping anyone out with a tooling package for a new machine. Send me a quick email thru contact us page on maritool.com. Please don't private...
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    I have always been hesitant to make 1" endmill...

    I have always been hesitant to make 1" endmill holders for the BT30 taper. But after some requests and some of my customers using specialty tooling such as broaches that have a 1" shank I will make...
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    Imbalance is a function of the off-center mass...

    Imbalance is a function of the off-center mass and the radius on which it rotates. So a flat on an endmill shank is much less of a concern than an imbalanced tool holder.

    Years ago I had the...
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    Don't forget the cost of your own tool holder...

    Don't forget the cost of your own tool holder balancer. Any rpms above 25k on a BT30 tool holder or larger and the holder should be balanced as an assembly. Maybe the only time you dont is when you...
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    One thing I would like to mention. Be careful...

    One thing I would like to mention. Be careful with those collet chucks where the gage length is so short they use a special collet nut and the collet taper is actually in the spindle taper. In many...
  14. So just to update this thread. We have added a...

    So just to update this thread. We have added a few more sizes to our mirrorline lineup of 3-flute alum specific finishers per feedback from a few of you guys. Also refering to post#50 I will have 4...
  15. Way too many flutes in the cut. A 3 fluter would...

    Way too many flutes in the cut. A 3 fluter would be best.
  16. Come to the dark side my friend.. Tool...

    Come to the dark side my friend..

    Tool Holders, Collets and Machine Accessories - MariTool

    kidding, but I 100% agree it still baffles me. Multi billion dollar companies and there website is...
  17. I wouldn't recommend it because I always try to...

    I wouldn't recommend it because I always try to give very conservative feeds and speeds, but one of my good customers that is also local to me uses this on 4140 at 900 sfpm. With flood coolant. All...
  18. I dont think this question can be answered. It...

    I dont think this question can be answered. It totally depends on the part. If you are milling a flat and then drilling and tapping a hole you may need 4 tools.
    Or if you go out of your way and have...
  19. If USPS stopped losing shipments I would love to....

    If USPS stopped losing shipments I would love to. Lately every 10th shipment. Poor tracking. Need to spend hours to file a claim. Hopefully with NAFTA ending shipping will get better.
  20. Something like this. But 4 flute 45 deg helix for...

    Something like this. But 4 flute 45 deg helix for alum. With chipbreakers.

    1/2 Variable 5 Flute End Mill with Chip Breaker 1.25 LOC MariTool

    Sounds like a good tool for BT30 machines with high...
  21. In the 80's and 90's all BT30 machines had 5 or...

    In the 80's and 90's all BT30 machines had 5 or 7.5hp spindles. Now 15 and 20hp is the norm. One thing has remained the same though, the retention knob. That is the weak point of all BT30 spindles....
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    case harden .03-.05 deep. 52-56rc. table blast....

    case harden .03-.05 deep. 52-56rc. table blast. You dont want it too hard.
    If it is coolant thru plug the hole with a screw and nut on the other side.
    Make all corners with nice size fillets so...
  23. These corn cobs are insane... 3 Flute High...

    These corn cobs are insane...

    3 Flute High Helix Carbide End Mills for Aluminum Alloys - MariTool

    New MirroLine endmills. We are getting great feedback and we will be stocking more sizes soon....
  24. We carry them... Variable Flute End Mills With...

    We carry them...

    Variable Flute End Mills With Chip Breaker - Made in USA - MariTool

    These are getting very popular. Stopped by a local customer/buddy of mine. He was using our 1/2 in 4140....
  25. Holding tenths is all about making variables...

    Holding tenths is all about making variables disappear and keeping things constant. From strict climate control, allowing incoming material to climatize ( sometimes for days) to ambient temperature,...
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