I understand your question shed9, we do have a lot of good information on the Incra TS-LS products - what we don’t have is reliable information on woodworkers own Table Saws (ideally from people who have successfully fitted TS-LS to their own machines). So knowing it fits your Hammer K3 is excellent news.
Whilst there is a compatibility chart for the TS-LS system published by INCRA which lists a large number of Table Saws, it is almost exclusively made up of models that we do not commonly have available to us here in the UK or Europe.
Our saws may have deeper tables (though that can usually be accommodated by selecting the XL version of the INCRA product) but there remains the question of whether the front and rear edges of the table are suitable for the attachment of rail brackets. Trying to find out this information is tricky unless you have the saw bench yourself.
The key points for fitting the system are the user would need to have access to mounting points that are solid, parallel and at 90 degrees to the table top. There would also need to be free access to the underside of the table in order to accommodate the washers and nuts that affix the brackets. The location hole positions and diameter are not an issue because INCRA's universal rail mounting brackets will work with any hole pattern and a wide variety of hole sizes.
The standard TS-LS fits tables up to 28” and the XL fits saw benches fit up to 33 ½”. A secondary consideration is the size of the Mitre Slot - if users wish to use Incra sleds and Mitre gauges, which fit the American standard (3/4” x 3/8”).
What I would like to do is compile a list of UK and European machines on the website that we know the system has already been fitted to (although we do supply the dimensions and fitting instructions to customers, we can’t be sure the products will fit which is a little disconcerting).
Any help from users is very welcome, cheers Peter.