Came complete with BS certificates
You can’t beat the price of these vises – $100 delivered. However like so many low end offshore suppliers, the claims and test certificates are just complete BS. I’ve been involved in manufacturing in these markets and its different than here; if a manufacture can fill in a bogus test sheet and get away with, that just A OK, so a lot of manufacturing works that way.
Test were done a pristine Starrett grade A inspection plate using a interapid 10ths indicator. The parallels are proven and everything was repeated several times to check for dead on repeatability
The square
Indicating the four corners of vise ways shows that they are close to within tolerance.
Whats acceptable to someone is variable thing but for me and imo its a poor show putting out tooling like this. What should be universal though is disdain for false claims. I was hoping things had changed as they start to discover branding.
Indicating the four corners of vise ways shows that they are close to within tolerance
However on flipping the vise over and checking for parallelism, there is lots of variance across the surface. As much 002″ over a few inches. That seems like a huge amount for a ground surface and as soon as you bolt it to something, the base will distort and would put the ways out of tolerance (the already are but just a wee bit)
you can see across this short area there is a 2 thou variation. At first I thought the fixed jaw must be warped and is pulling the base out of shape, but then the first test would have mirrored this, but those top surfaces were close to ok.
Where there is no doubt as to false claims is squareness. They claim its certified to .05mm per 100mm. I measure 8.5 thou over 6″ which equates to .096mm over 100m! That square is mitutoyo certified grade 00, bought new by yours truly and only used very rarely and only for
That square is mitutoyo certified grade 00, bought new by yours truly and only used very rarely and only for inspections. certified to 5 microns or 150mm. That is very loose standard by tooling standards, and this one is almost twice that
Here’s a video I did showing some of the tests
