Thread milling reduce machining time compared with thread turning. Excellent chip control minimizes the risk of tool failure.

When I call my mother in Japan, and she asks me how I’ve been, I want to paint vivid pictures and convey precise details so she can imagine me going through the motions step by step. We found tumors in my cadaver, and I cannot help but imagine my own mother’s tumors, past and present, in the palm of my hand. I wonder how big or small or differentiated hers might be compared to what I’ve uncovered and held.

When we gather over Thanksgiving to update family and friends on our lives, share our concerns in living room corners over slices of pie, these are the things I want to say. But I know that these are things I cannot say, not without spoiling a meal or time that’s meant to cherish loved ones and life. I cannot say that the turkey reminds me of muscle and ribs, or that the white stringy fibers are nerve bundles, or that underneath all of our skin, we kind of look like that too. No one teaches you how to negotiate these things in medical school—that you might run into family conversation and not know appropriate from inappropriate, suddenly become repulsed by meat or the smells in your own home, look at the person you love and imagine what courses under their skin.

Thanksgiving centers around the act of coming together. COVID-19 has made this challenging, and families have mounted cameras for Zoom dinners or staggered visits to preserve some semblance of a gathering. But there are things that cannot be brought to the dinner table. My boyfriend stops me from spilling the details of dissections, but when we eat together and share the happenings of our day, these stories are often the only thing I want to share—the texture of cutting through flesh, the intricate meshwork of nerves and vessels in the neck, the recoil of the aorta, the sensation of holding a heart, an avocado coated silky pink.

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Laser cut holes becomes more common. Threading with a tap is difficult because the surface has become hard, but with a thread mill it is easily done.

With taps you need different tools for different tolerances. The tap is used up after wear, but with a thread mill you can continue threading after adjusting with radius compensation.

We begin at the sternum, working through the previous incisions, peeling away layers of flesh and muscle. We lift the rib cage, which was sawed apart earlier, from the base of the neck and prop it up against her belly. It forms a right angle, but keeps falling down. We awkwardly place our elbows and forearms against the floppy rib cage, still attached to her abdomen, to get it to stand. I scoop excess embalming fluid from the thoracic cavity, disposing of it in the bottom of the bag which makes its way towards the drain between her ankles. The sourness fills the room, my face, my eyes. My glove tips slide against each other like cheap pancake syrup running between them. I watch my teammates resect the heart, placing scissors in the aorta. Snip. The heart is passed around. I hold it in my hand, and it is rock solid from what our professor hypothesizes was a pericardial effusion. I align the tip of the scalpel at the top of the heart, cutting deeper and deeper. One chamber at a time.

The three of us go around the table to introduce ourselves, smiling under our masks and glasses, warming up our fresh scrubs. I had never met either of them before or even seen their faces through Zoom. A moment of silence passes. The guy across from me offers to hold the instruction manual and swiftly grabs the anatomy atlas in his other hand. I grab the zipper at the foot of the bed and slowly open the bag, passing the zipper to my teammate on my right, and watch her make a large circle around the table. Sour, stale air presses against my face, despite the mask. Formaldehyde seeps into my pores, my hairs. The fourth member of the group joins, a green cloth mask against his thick black beard. He hovers over the table, surveying our pale naked woman.

Minimal risk of machine stoppages as the cutting forces are low and the chips are short. The work piece will not be destroyed in case of tool failure, as the tool will not get stuck since the diameter of the thread mill is smaller than the thread.

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The machining time will be short while using ThreadBurr as the thread will be deburred when threading, so chamfering is not necessary to get a good thread. Big diameters, fine pitches and long threads saves most time compared with tapping.

In my weekly research meetings, my mentor’s children are often running around in the background. Sometimes they come up to the screen and show their newest lego contraptions. My mentor is a breast surgeon, and I wonder if she thinks of her first cadaver, or her current patients, as she slices through turkey and serves her family—one type of breast for another. I wonder if her husband does the cutting at home. Or if she says anything about the similarities and total strangeness of knowing what lies beneath our flesh over family dinners. I wonder if she senses the separation of work and family life over Thanksgiving. Leave this at the hospital, leave that in lecture, leave those details for research lab. I wonder if she lets her sons cut.

If you make a surface treatment, special taps must be used, if not the threading has to be made afterwards to get correct tolerance. With a thread mill, the thread can be made before treatment. No machining is needed after the treatment and the thread is protected against rust and wear.

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The thread entrance will be burr free when using ThreadBurr. Threading and deburring in one operation. No additional time for deburring.

With thread milling, a full thread profile is obtained all the way to the bottom of the hole. This allows you to make a thread where it is usually not possible.

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Same cutter can be used for both right hand and left hand threads. Threads with different diameters and tolerances can be made with the same tool as long as the pitch is the same. The same thread mill can be used for blind holes and through holes. W, BSPT, PG, NPT, NPTF and NPSF are thread profiles where you can use the same tool for external and internal threads.

Tapping is normally considered as a quicker method than milling. That is correct in small coarse threads if you do not take in consideration the time for chamfering.

This was my first time using a scalpel to cut more than a banana or pig foot in a suture clinic or a rat for research. Maybe it wouldn’t feel so strange if I brought these experiences home to friends or family or weekend drinks with classmates. But instead, I find myself staring at thawed chicken meat on my kitchen counter, unable to cook dinner because I cannot unfeel the light and dark muscle fibers between my fingertips or unsee the similarities with what sits on my cutting board. COVID-19 has made me appreciative of smell and more aware of the smells around me, but tart coffee and the waft from the garbage can all yank me back to the cadaver lab.

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When tapping, the tool size is the same as the thread size and the tap has to force the chip through the thread. The result is a thread that may not be good enough.

With tapping it is necessary to drill much deeper as it is only from the third thread you get the complete thread profile.

If you have threads with the same pitch you will save time in tool changes as you can use the same thread mill for different diameters.

The teeth present in this type of insert are at the circumference of the circular disc which is why they are known as periphery milling inserts. They only work ...

Thread Milling is a modern and efficient method of threading. On this page you will learn 14 reasons why you should choose Thread Milling instead of Tapping.

The cutting conditions are optimal when thread milling. The chip evacuation is very good as the tool diameter is smaller than the the thread diameter. The thread will have very good surface finish and quality.

Thread milling result in longer service life of the machine spindle compared with tapping as the rotation on the spindle does not need to be stopped and reversed for every thread.

I look at my mentor—a surgeon, a professor, a researcher, and an educator that I aspire to one day become—and wonder where she puts these thoughts if she cannot unload them at the dinner table. Where do medical students unload if they’ve yet to find community among their class or already feel isolated in their virtual pandemic world? Thanksgiving is about coming together and being present with loved ones, but smells and sights and textures bring me back to my cadaver, to a room full of dead bodies.

It is Thanksgiving week, and now these sensations have followed me into my boyfriend’s home in New York, where we will celebrate the holiday with his father. I wonder how many other medical students, health professionals, and practicing physicians will look at the turkey coming out of the oven, cut through its layers, uncouple meat from bone with family or friends, and think of their first cut. The isolation of online medical school is dawning on me—less as the isolation of performing everyday actions but of processing those experiences alone.

The Pitch diameter has been optically measured on thread mills from SmiCut and the theoretical external diameter has been individually laser marked on each cutter so you get a thread in tolerance right away. When the tool starts to wear it is possible to make adjustments in the CNC-program.

The excellent cutting conditions with low cutting forces makes it possible to thread mill materials such as hardened steel up to HRC 65, Titanium and other difficult machined materials.

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Radius symbol — a symbol indicating that the dimension shows the radius of a ... When the depth of a blind hole is specified, it refers to the depth of the full ...