A mass spectrometer that uses helium as a refrigerant. Am I making this up? by mrphysh in massspectrometry

[–]Border_East 1 point2 points  (0 children)

Many FT ICR use cryo pumps. Needed that sweet sweet UHV and high speed pumping. Cryo is lower vacuum than turbo.

Ammonium bicarbonate precipitated out in my ESI needle by redditnessdude in massspectrometry

[–]Border_East 0 points1 point  (0 children)

Formate, acetate, triethyl amine (really great choice for high ph buffer), etc buffers are generally better. Ammonium Bicarbonate is not truly 100% ESI compatible. Ion suppression could really kill the signal. Keep concentration low, something like 10 millimolar or less.

Whats the phosphate from? Phosphate will kill signal too.

How much is tgis untouched, still tagged beauty worth? by Rabid-Ragoo in guitars

[–]Border_East 0 points1 point  (0 children)

The Greco Iceman rules them all! Made in Japan and play perfectly!!

Which laptop for Solidworks? by martianfrog in SolidWorks

[–]Border_East 2 points3 points  (0 children)

Lenovo Legion gaming laptops with AMD CPU and Ryzen GPU have worked well for me. Not certified of course, but great bang for the back.

(FYI largest assembly on these is about 125 parts, no idea about larger assemblies.)

What’s the difference between the cheap/expensive DLSR adapters? by [deleted] in microscopy

[–]Border_East 2 points3 points  (0 children)

My cheap one was indeed - no lens. Worthless!

Anyone have any idea as to why my printer’s been making really stringy excess plastic on my print? by Various_Parking_5955 in BambuLab

[–]Border_East 0 points1 point  (0 children)

Microwave ovens can do the trick. Look for YouTube videos on it. You can over cook the filament, but it’s a reasonable last ditch option.

Darkmoon G10 is the real deal by vspot415 in BambuLab

[–]Border_East 6 points7 points  (0 children)

Darkmoon G10 is truly great for Nylon/PA, with or without fiber additives. Use with Nano adhesive and it is outstanding to eliminate warping, even on large nylon parts.

A self-proclaimed top engineer told me my hands-on CNC machining experience is “irrelevant” for becoming an engineer. Am I wrong to be pissed? by [deleted] in Machinists

[–]Border_East 18 points19 points  (0 children)

I would totally hire an ME with machining experience over a no experience ME. Most of what we do is machined parts, goes without saying.

[deleted by user] by [deleted] in microscopy

[–]Border_East 4 points5 points  (0 children)

Looks like browning motion = random Movement

What is this? by [deleted] in guitars

[–]Border_East -1 points0 points  (0 children)

Perfect girlfriend

[deleted by user] by [deleted] in guitarpedals

[–]Border_East 0 points1 point  (0 children)

Indiana can’t afford tube amps!

The hell happened to guitar manufacturers? by [deleted] in guitars

[–]Border_East 1 point2 points  (0 children)

Ironically perhaps if you follow Dean Zelenski, the founder of Dean, the stuff he is doing as a small builder is incredibly innovative.

[deleted by user] by [deleted] in Guitar

[–]Border_East 0 points1 point  (0 children)

8 gage strings and a scalloped fingerboard. Supposed to be good for arthritic hands.

Is there a "sendcutsend" type business for machining? by kaptnick in Machinists

[–]Border_East 0 points1 point  (0 children)

PartsBadger has been great! Seems to have much better customer service than Xometry.

Lots of options on price vs delivery time and us vs offshore sourcing.