Technical Help & Expertise

Hello Steve,

Thank you for your inquiry,

The rules of thumb are in peel milling is 25 to 30% speed increases and 2 to 3 times the feed rate  no more than

 20% engament. because of your diameter I would start @10% engagment.

For your 410 stainless I would start running at 490 sfm feed rate , because of such a small

diameter I would start at .002 to .003 ipt to start

Higher tensile strength materials generally do better with wider point angles. A parabolic, high vanadium steel drill with a TiAlN coating is a good basic choice for short runs and/or manual machines. For longer part runs and CNC machines, choose a solid carbide drill with some sort of coating for Titanium. (High end drill manufacturers have come up with a lot of incredible multi-layer coatings that offer huge benefits over single layer coatings.) If you can put coolant thru the tool, that is a huge benefit since titanium doesn't conduct heat. There are flat bottom drills that will work very well in titanium in CNC machines with coolant thru spindles. Kennametal and OSG both have the flat bottom drills available.

    That is a replacement part that would need to come from the manufacturer of the machine. We do not have a relationship with this machine manufacturer to be able to quote it for you.

  Hello Trent,

I've pulled up some information on this material, it shows that in the annealed state it should machine similar to D2 or M7 tool steel. In that case, the parameters are as follows: 260 SFM / .00012 per tooth / no more than .04 depth of cut. These parameters are a starting condition and may need to be adjusted based on your specific setup.

Hello, when it comes to larger non-standard thread taps the H4 is fine for a 2A/B class. Each "H" limit only represents .005" on the high side (oversize of pitch diameter).  Our part# 59898452. 

Scientific only makes those in carbide tipped tools. We offer a HSS version from Craig Tools (00389775) but we don't have anything in cobalt.

Hi Mike,

The manual is about 135 pages long. If you could send your email address to me I could forward it to you that way.

My email address is milneb@mscdirect,com. Thank you!!

Using any abrasive cut off wheel will give you very tight control on the width of cut. However, diamond may or may not be the best abrasive for your application. If this is pure nickel, a resin bonded diamond cutoff wheel should work well. If it's a nickel alloy, then you would want to use a CBN (Cubic Boron Nitride) wheel. 

Using a carbide saw, I would suggest starting at 80 SFM. Feed rates are going to depend on the specific cutter. You might also find this article helpful:  https://www.mscdirect.com/betterMRO/metalworking/5-metal-cutting-tips-ni...

That would all depend on the drill that you have. Be careful, though, because just because a drill is made out of solid carbide that doesn't mean that it will drill hardened steel. MSC carries lots of carbide jobber drills, for instance, that are only to be used in non-ferrous materials and are less than useless in steels, let alone steel that has been hardened. If you can tell me what drill you have, I can check it out for you.

Hello! 

Thanks for reaching out.

Please provide your e-mail address and we will gladly send you a copy of this manual.

Hello,

With this AR plate being 50-54RC it is going to wear out any tool that is used, HSS, Cobalt or Carbide. With that being said here is and indexable 90 deg counter sink that is the best type of tool for your application. Instead of throwing out a countersink after a couple holes because of a wear notch, you can just change the insert.

73156465   1/4" MIN 90 DEG INDEX NEG CLNT FED CSNK & CHAMF

52076437   TNMG322-QM 235 CARB TURNING INSERT

02957512   6H8S35 SCREW CTT SPARE PART

200-400 rpm x .001-.0015 ipr

Thanks for your inquiry.

Please don't hesitate to reach back out with any further questions.