EDC XIII Which knife or knives are you carrying today?

[Whetstone39]

A Swordfish on this sunny day.

 

[Hammer67]

 

[Edgeoflife]

Ever look at something and the first thing you think of is "that's expensive"?

If you're allowed to say, I'm curious what kind of go/no-go tolerances you look for?

(I have no idea what sort of information is considered "proprietary", these days.)

This particular sub assembly is fairly simple in comparison to the rest of the equipment and is solely mechanical in nature but is just as important as the rest. There are only a handful of parts but all are subjected to a harsh environment operating a few miles under ground (drilling an oil/gas well) with up to 1000 gallons per minute of abrasive mud, filled with additive chemicals flowing through and around these parts with high pressures and high temperatures (relative to the design and materials etc) so the potential to erode away everything quickly is a concern if not setup correctly. everything is scrutinized bc you don't want to be the reason the rig had to stop drilling for days which is expensive.

For this particular piece of equipment, the rubber seals on the piston in that bore need to survive long enough in the environment to get that section of the job done, say 100 hours at a time, before needing rebuilt and parts replaced, so the seal’s extrusion gaps have to be as tight as .003” diametrically or .0015” on each side in between the bore wall and piston OD. Nothing too crazy but too tight and it will bind up and too loose it will fail within hours in a multitude of ways and it will only get looser as it runs so all parts are machined and finished with only a few thou for min/max tolerances and have to be measured at several steps in the assembly process while taking into account any potential tolerance stacking to insure those spaces between the bore ID and piston OD, where those seals will live, fall within the tolerances that have been honed in over time/ experience to work. Idk how interesting that is but a pic is worth a thousand words I suppose and yes Everything in the Oil industry is definitely expensive!


Stretch 2 XL again today

 

[Greasepiggy]

 

[TheFactor]

 

[maxjeg]

Final preparations before the holiday.

 

[MRI]

 

[KAR9889]

My workout partner

 

[WValtakis]

Thwick-thwack Thursday, checking out this SOG Knives "Pentagon OTF"

 

[Spuzzard604]

Today I'm carrying my Benchmade Bugout with Flytanium Micarta scales and CPM S30V blade.

 

[DA170]

 

[scorpnsnake]

That guy on the right is really cool, what is it?

Thanks man! That's the Murder Hornet by our very own BogdanS . He may just be planning to make a Murder Hornet themed fixed blade to ride with her.

 

[Chronovore]

 

[PeaceInOurTime]

woodysone
Here's the sheath. It's mounted on an old financial card using zip ties which adds width and structure so I can add other items to the sheath.

 

[sharp image]

My drive into work at 6:15

 

[DA170]

My drive into work at 6:15 View attachment 3012263View attachment 3012264

It’s mostly always nice in Coastal San Diego area…but the last few days have been off the charts beautiful!!

 

[sharp image]

It’s mostly always nice in Coastal San Diego area…but the last few days have been off the charts beautiful!!

This is coming down Kanan Rd into Malibu. View from the house we are working in.

 

[mitch13]

 

[ChazzyP]

I've been pretty much absent from these pages lately as I've been spending a lot of time both on youth b-ball admin for my club and league as well as feeling like crap as my nasty cold slowly abates. I've actually even had to write practice plans and run a few tryouts, despite being basically retired from coaching for a number of years, as I've had to sub in for one coach plus helping out a former player and coaching rookie as we're fighting to build a new team at one grade level.

Anyway, I've been carrying the same knife for a few days and finally got to snap some pics late this past afternoon before heading out to an early evening tryout/practice. At the midpoint of this three-day carry it actually was a Wilkins Wednesday.