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Emissivity is an issue with thermal imagers, though it's something to be aware of, rather than a reason not to use one. As Engineer2 says, shiny aluminium (or shiny anything) will look colder than it is due to low emissivity. If you are looking at a black heat-sink, it will seem much hotter...

I've used the Rhino 4200 for a year or two. I use it mainly on sites that are between one and eight hour's drive from home and might need between two and perhaps thirty labels per job. The time taken to one-finger in the characters is insignificant in my case. It has made marking cables much...

SDS hits a LOT harder than a hammer drill, but turns a fair bit slower. If you are an old codger like me, you might remember handheld star drills and fibre rawlplugs. The star drill was basically a punch with a cruciform section. You hit it, turned it a bit, hit it again, turned it a bit, hit...

In this thread, the subject is a Woden Vice, made in the UK where the same spelling (vice) is used for both meanings. "Vises" are usually American, though Parkinson, another British maker of vices, also used the "vise" spelling. Australia and pretty much everywhere but North America that...

SDS drill is the way to go. They turn slowly, but hit much harder than an a conventional old-style hammer drill. The difference is almost unbelievable the first time you use one. For 5/16 holes, any SDS drill will be fine. If you drill bricks, going for an overpowered SDS drill will tend to...

The best advice I can give the OP is to blow 30-35 quid on a Bahco S330 3/8" drive set and see whether or not it seems up to the standards required. It's a lot of bang for the buck and widely available (33 quid at Screwfix, for example). If it's not what is needed, it's not a lot of money to...

The metric grading system for bolts uses two numbers. The first is the ultimate tensile strength. The second is the yield point as an approximate proportion of the UTS. An 8.8 metric bolt has an UTS of 800 Newtons per square millimetre and a yield strength of 0.8 times the UTS: 640 N/mm2. This...

As someone above said, don't discount Bahco. I think they are Taiwan-made, but I could be wrong. Take a look at the S330 and S330L sets. S380 too if you need imperial sizes. I fix mechanical stuff on site for a living and the Bahco kit I have has been pretty boring (this is the highest...

It's the pole count on the motor. Each pair of poles "uses" one cycle per revolution. On 60 Hz mains, there are 60 cycles/sec and 60 sec/min, so 3600 cycles/min. A 2-pole motor has one one pair of poles and turns at 3600 RPM. A 4-pole motor has 2 pairs of poles and turns at 1800 RPM. In the...

The Eron looks like a clone of the Record number 8. The 8 is probably the least desirable of Records 8" bench vices, being Gray Cast Iron and plain screw. The more desirable 8" Record 114 was originally cast in steel and later in SG iron and is much stronger ("unbreakable"). It also has the...

The Wright ones pictured on the Epstein site have "Spain" marked on them in the photos (next to the hanging hole).

Caveat: I'm in England, so don't necessarily get to see/use all the brands available Stateside. Bondhus are good. I've used them as my go-to for decades. The Wera Hex-Plus seem better. I deal with a lot of stainless socket-head screws in outdoor locations, often into tapped holes in...

The 2" flat Jaws and 1 1/2" pipe jaws do indeed indicate it is a Number Two.

If you can live with the reduced clearance from a longer chuck, the keyless would be my preference too. Carry out the run-out tests outlined above before making your decision and have a think about whether you can live with any reduction in the working height before pulling the trigger. Once...

There was group buy a few years ago on a knife forum I used to frequent: I think it was a UK importer closing down and selling old stock. I bought 3 or 4 of the 2x36 units and a 4" x 36". Price was around 80 bucks each and they were an absolute steal at that price. One of the guys on the forum...

The standard Metric sizes are M4 7mm M5 8mm M6 10mm M8 13mm M10 17mm M12 19mm M16 24mm M20 30mm M24 36mm M27 41mm M30 46mm These are the common preferred sizes for off-the-shelf fasteners. Obviously there are other...

That's usually the case. It can get a bit more complicated if you are stuck with using the original motor frame size because going to a higher pole count tends to mean going for a lower power output. If you can get the same power output in the 6-pole motor as you have in the 4-pole, that'll be...

Most of the ones I have used will allow you to select whether RPM or Hz is displayed. The RPM is not usually a precise value: you put in the motor rated RPM at motor rated Frequency (say 1750 RPM at 60 Hz) and the drive displays the speed based on an assumed constant relationship between Hz and...

We're not really seeing any obvious reduction in motor life. This comes with the big caveat that it's hard to tell for certain because the sample size is relatively small and we're in a business where a lot of stuff gets broken long before it wears out. We're also running centrifugal blowers...

I've used a few of the HuanYang VFDs, but never on a hard-start application, like a compressor. There has always been a ramp-to-speed. Either it'll work fine or it'll struggle to run up to speed. I'd expect it to just work, but if it struggles to run up, teeing a solenoid valve off the line...