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Grinding crystals? | Page 2 | QRZ Forums

Commercial grinding (as you'll notice in that video) goes very far out of their way to keep the sides parallel and flat. When you hand grind crystals in the sink on a piece of plate glass, it is difficult to make them as parallel and flat as commercial crystals, which is why they start to get lossy and the Q tends to broaden if you get more than ten or twenty kc off the …

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Machining Quartz Glass - Practical Machinist

Quartz is for the most part, largely the same stuff, but in a larger unbroken crystal. Grinding or machining it should only be done with a proper respirator. And heaven help you if it makes it's way into the sliding surfaces of a machine tool.That would be like putting fine sandpaper in those joints.

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Grinding crystals - Amfone

I have taken the quartz plate out of a few FT-243s and put them in the round holders, and they stayed right on frequency. Quartz plates removed from BC-610 crystals fit into those holders very nicely. I do plan to try re-grinding a few oddball frequency crystals just to see if I can do it and then say I have done it.

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How to Polish Quartz Crystals: 12 Steps (with ... - wikiHow

Quartz crystals require a 3 step process before they are polished and beautiful. You'll need to clean clay and dirt from the crystals, soak the crystals to remove heavy grit and discoloration, and then sand the crystals until they shine. Steps. Part 1. Part 1 of 3:

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Read Hand-Grinding a Quartz Crystal Online

Hand-Grinding a Quartz Crystal - Read online for free. I thought it was going to be a typical Tuesday of helping Elmer by doing log entries as he proceeded with the boat-anchor CW contest. Actually, I've yet to have a typical "work" day (if you want to …

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grinding crystal quartez - mediabricks.nl

grinding crystals mineral - postcatcher.in. grinding quartz crystals with masonry rock. grinding crystal quartez -Natural AAA Countless Stone Amethyst Quartz Crystal Rock Grind Mini Sand,Healing in Collectibles, Rocks, Fossils & Minerals, Crystals. grinding of quartz containing minerals.

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How to Drill a Hole In Quartz Crystal - SawsHub

Select a compatible rotating power tool. A handheld electric or battery-powered drill has sufficient power and speed for drilling quartz, and can be used for drilling holes in countertops or quartz slabs. If you want to drill a hole in quartz crystal for …

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Grinding Radio Crystals - QRZ Forums

The crystals in metal cans with metal electrodes directly on the quartz can be lowered slightly in frequency by rubbing pencil lead on them. FT243 cases can be modified to incorporate a threaded hole and screw in the face plate, so you can vary pressure on the crystal from the outside, which will also change the frequency. K0RGR, Jul 9, 2017 #4

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Quartz Grindstone - Official Feed ... - Feed The Beast Wiki

The Quartz Grindstone is a block added by Applied Energistics 2.It is used to grind Certus Quartz Crystals, Nether Quartz, and Fluix Crystals into Certus Quartz Dust, Nether Quartz Dust, and Fluix Dust respectively. In order for it to function, a Wooden Crank, Iron Gear Box, or (if Thaumic Energistics is installed) Thaumium Gear Box must be placed directly above the …

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oscillator - What's the precision of a quartz crystal ...

$begingroup$ We're mostly interested in a crystal oscillator's frequency. Ageing affects frequency. You'd be looking for a drift of frequency over time, beyond random frequency errors. Read about Allan variance.You'd be comparing your drifting crystal oscillator against the excellent frequency counter's internal timebase. "Drift" is far, far slower than the oscillation …

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How Are Quartz Crystals Cut and Polished? - Our Pastimes

Grinding, Sanding and Lapping The quartz crystal is then polished by grinding and sanding. The grinding wheel is dotted with very coarse bumps made out of an extremely hard material such as silicon carbide. It spins rapidly and is pushed against the quartz to slowly wear it away into a chosen shape.

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Grinding quartz and holding a frequency during World War ...

Most of the 'radio quality' quartz was mined in Brazil which ceased its neutrality in 1942 and joined the Allies. The story of quartz crystals during WWII is told in 'Crystal Clear' by Richard J. Thompson Jr. (Wiley) 2011. "Crystal Clear – The Struggle for Reliable Communications Technology in World War II" by Richard J Thompson Jr.

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Crazy Conflicting Crystals: AVOID These Combinations

Crystals are a powerful way to tap into your spirituality, connect with the Universe, and manifest your desires. Like using crystals to attract more friends, or attracting wealth from crystals.. And while there are many powerful gemstone combinations, there are also plenty of conflicting crystals.. When most people first hear about conflicting crystals, they imagine …

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Quartz crystals and oscillators, Part 1: Crystal basics

Quartz crystals and oscillators, Part 1: Crystal basics. An oscillator or clock function is key to nearly all electronic circuits, and in most (but not all) cases, the heart of this oscillator circuit is a tiny piece of quartz, called the crystal blank or slab. It's easy and commonplace to think of the crystal as a simple component, but as ...

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grinding machine crystals - toptijdenbv.nl

Quartz Processing,Crushing & Grinding,Plant | Prominer … Crystal Grinding Machine, Crystal Grinding Machine Alibaba offers 740 crystal grinding machine products. About 21% of these are grinding equipment, 5% are grinding machines, and 2% are polisher. A wide variety of crystal grinding machine options are available to. Get price

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How to Find Crystals in Your Backyard

How to find quartz crystals in your backyard. Quartz can be found in the area surrounding your home, but you need to know where to look. They are most often found in sedimentary rocks because they form when slabs of rock grind against each other in slow-moving water.

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Raising the frequency of a Quartz Crystal - byethost3

By contrast, it is possible to raise an original crystal's frequency by much greater amounts - by thinning the crystal slab. Thinning the quartz crystal can be done by immersing it in hydroflouric acid [2], or grinding. I now describe raising the frequency, via the grinding method, of the above pictured 5675 KHz crystal all the

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High-quality Quartz Monitor Crystals Manufacturers - SungThai

The quartz wafer after the rotary grinding needs to be further ground with the grinding machine. Grind the surface of quartz crystals and allow its thickness and roughness to meet the requirements. Generally, actual crystal thickness is smaller than theoretical thickness because subsequent vacuum evaporation step will apply a metal film on crystal surface resulting in …

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Antique Radio Forums • View topic - FT-243 Crystal Grinding?

The secret to moving the frequency of a crystal very far is that the grinding must be done in a uniform manner. My old friend, NG7A (sk) used to move crystals in the 5mc range to the 7mc range and they all worked just fine. But he had his micrometers on the piece of quartz very often.