Chinese tools debate

[clockboy]

Yesterday evening I was trolling the net ( as we all do)  when I stumbled on this vid. Last month there was a debate on are Chinese tools worth purchasing and I gave my thoughts that being the biggest differences is the materials used to make them and also they are not built to the Swiss fine tolerances. The tool he shows to compare with the Seitz jeweling tool I am sure is Chinese and shows the point I was tring to make. 

 

https://www.youtube.com/watch?v=CIqQcVLgtB0

Edited May 22, 2024 by clockboy

[mikepilk]

This vid was a bit of a surprise to me, showing the difference in quality between Horia and Bergeon jewelling tools.

For those who worship Bergeon, I suggest you don't watch it 

 

[Knebo]

This is an interesting video. 

In one aspect, the guy is wrong, though:

at 19:35 - 20.30, he say that the spindle won't move back up when using the screw-type-micrometer attachment for the Seitz (instead of the lever). This is false. It seems like he remove the spring when installing the adapter. But you can/should leave that in. The spindle will then move back up like it should - and like the Horia. I've done this several times -- in fact, it's the only way that I actually use the Seitz for jewelling purposes.

See picture and GIF as "proof".

 

Another aspect that I found very interesting is the question about the anvil size. At 14:06 onwards, he nicely demonstrates what happens when you use an anvil that has a hole that is too large and too far away from the jewel: it makes the jewel pop out prematurely. This is, in fact, a situation I've faced a few times and didn't understand why it was happening (and hence, I abandoned the end-shake adjustment). I understand this now and will be able to do better next time.

It is true that there are too few anvils in the (normal) Seitz set --- (but as he correctly points out, one can use pushers on the bottom side to increase the options [if you have the threaded plug to close the bottom hole of the tool from the underside, see his video at 2:45]). 

 

 

Edited May 27, 2024 by Knebo

[rjenkinsgb]

I've got one of the cheap Chinese jewelling kits due to arrive any day; I am rather curious just how good it will be? Around 130- for the tool with 24 pairs of pushers & anvils.

 

 

[Titanium]

Some of the Chinese tools ae great and can be purchased at a fraction of the price of Swiss ones, some are complete garbage and some I'm convinced are coming out the same factory as the branded ones.

[Malocchio]

On 5/27/2024 at 11:29 AM, Knebo said:

This is an interesting video. 

In one aspect, the guy is wrong, though:

at 19:35 - 20.30, he say that the spindle won't move back up when using the screw-type-micrometer attachment for the Seitz (instead of the lever). This is false. It seems like he remove the spring when installing the adapter. But you can/should leave that in. The spindle will then move back up like it should - and like the Horia. I've done this several times -- in fact, it's the only way that I actually use the Seitz for jewelling purposes.

 

Seems like he doesn't have the micrometer cap  attached to the spindle so he can only push down but cannot pull up? If the cap screws into the spindle I guess you don't need the spring? I only have a "normal" Seitz so I really have no idea. 

[caseback]

26 minutes ago, Malocchio said:

Seems like he doesn't have the micrometer cap  attached to the spindle so he can only push down but cannot pull up? If the cap screws into the spindle I guess you don't need the spring? I only have a "normal" Seitz so I really have no idea

He uses the micrometer cap, but he leaves the spring out (you can see that in the video). If you leave the spring in, the spindle will move up as well (as shown by @Knebo).

Edited 7 hours ago by caseback

[Malocchio]

3 hours ago, caseback said:

He uses the micrometer cap, but he leaves the spring out (you can see that in the video). If you leave the spring in, the spindle will move up as well (as shown by @Knebo).

But he tells that the micrometer cap doesn't screw into the spindle. How can the spring push the spindle up if there's nothing to grip? There is a screw visible on top of the micrometer cap so should it be able to screw into the spindle? I'm feeling really dumb now. Does anyone manufacture that cap as an aftermarket item? Might be worth investing.

Ok so the spindle is different, now I get it.

[caseback]

14 minutes ago, Malocchio said:

But he tells that the micrometer cap doesn't screw into the spindle. How can the spring push the spindle up if there's nothing to grip? There is a screw visible on top of the micrometer cap so should it be able to screw into the spindle? I'm feeling really dumb now. Does anyone manufacture that cap as an aftermarket item? Might be worth investing.

The sping is not pushing directly on the cap, but is pushing against the spindle. So, even if the usual black cap is replaced with the micrometer cap, the spindle is still pushed up.

[Malocchio]

21 minutes ago, caseback said:

The sping is not pushing directly on the cap, but is pushing against the spindle. So, even if the usual black cap is replaced with the micrometer cap, the spindle is still pushed up.

Yeah I figured that one out when I googled and realized that my spindle is actually from Horia. It's smooth with no screwable cap.