Crystal assortment - recommendation?

[GuyMontag]

It seems most of the watches I am working on take a high dome acrylic crystal. I found what I thought was a great bargain on a large assortment (10 each of 25 different sizes) at only about 18 cents per crystal and the handful I've used have been great. However, they only come in "even" sizes (29.8, 30, 30.2, etc) so any time I need an odd sized crystal I need to buy them individually. Can anyone recommend another crystal assortment option, preferabley one that comes in "odd" sizes?

[Neverenoughwatches]

3 hours ago, GuyMontag said:

It seems most of the watches I am working on take a high dome acrylic crystal. I found what I thought was a great bargain on a large assortment (10 each of 25 different sizes) at only about 18 cents per crystal and the handful I've used have been great. However, they only come in "even" sizes (29.8, 30, 30.2, etc) so any time I need an odd sized crystal I need to buy them individually. Can anyone recommend another crystal assortment option, preferabley one that comes in "odd" sizes?

Hi guy. If you cant find an odd sized assortment, how about reducing the crystal diameter just that 0.1mm. If you can devise a rig that will spin the crystal over some wet and dry. Something like this to hold the crystal. 

https://www.ebay.co.uk/itm/374027333698?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=OjhrYMU9RuO&sssrc=2349624&ssuid=tBiLZaCfRb2&var=642973593105&widget_ver=artemis&media=COPY

Edited July 23, 2022 by Neverenoughwatches

[mikepilk]

According to Sternkreuz, acrylic crystals should be 0.2-0.5mm larger than the bezel diameter. So +/- 0.1 mm should not be a problem.

[Shane]

57 minutes ago, mikepilk said:

According to Sternkreuz, acrylic crystals should be 0.2-0.5mm larger than the bezel diameter. So +/- 0.1 mm should not be a problem.

Agreed.  After all, they are plastic.  After being installed for ten or twenty years they will magically be the right size. 

Shane

[GuyMontag]

Great,  that one set should work then.

[JohnR725]

16 hours ago, GuyMontag said:

It seems most of the watches I am working on take a high dome acrylic crystal. I found what I thought was a great bargain on a large assortment (10 each of 25 different sizes) at only about 18 cents per crystal and the handful I've used have been great. However, they only come in "even" sizes (29.8, 30, 30.2, etc) so any time I need an odd sized crystal I need to buy them individually. Can anyone recommend another crystal assortment option, preferabley one that comes in "odd" sizes?

Crystal assortments are quite interesting and watch repair. I'm attaching a PDF that's listing crystal sizes from a company found at the link below. There crystals in this country were very popular and are still very popular and give you an idea of what sizes you're looking for. Does other people appointed out it's amazing how much squeezing you can do to get a crystal again I get it to fit so you have a fair leeway on a high dome round crystal. Flat Glasser Sapphire well that's another story but the domes crystals you have some leeway.

Then you do have to be careful with Crystal assortments or for that matter any assortment and watch repair. Some of the assortments are used every single day depending upon what you're doing. Other assortments there's only one or two sizes that are popular in the rest of them just sit there forever. Those are the ones that come up typically on eBay missing one size the rest are all bargain priced because you probably never use them.

Crystals are very interesting like for instance image below it's a crystal And it still has crystals. Maybe the watchmaker diligently replaced every single crystal as he or she use them and that's why the crystals are still there or maybe they were never used at all. I've seen this at some of the watch and clock shows somebody will inherit them somehow look at the individual price and decide the entire cabinet is worth thousands of dollars in new money it go at a bargain price. Then somebody gets to explain to them that those are all leftover worthless crystals in your cabinets worth well nothing almost.

I was at a lecture on crystals once a person was talking about the human at one time had crystal of the month club. Some company would send the watchmaker assortment of crystals every single month. Then yes there are quite a few companies have made crystals all with their own unique sizes shapes styles that hopefully correspond the real watches. So conceivably you can literally have thousands of crystals especially if they're shaped crystals and never have the right one.

But your high domed round crystals are popular and as long as you don't go extreme sizes. I give you look at the chart look at how many round crystals they have how many we do use on the extreme sizes? So basically look at what you need now look at the assortment does it cover the sizes that you currently need at the price it sounds like a good deal.

https://www.gssupplies.com/plastic

 

 

G-S-SIZE-CHART crystals.pdf