Looking for a good SLA printer for 100mm diameter projects

Anycubic Photons, Wanhao Duplicator 7 and many others will print that size. Just know that the print will be brittle and becomes even more brittle over time. The resin is acrylic and will not act like the results you get from FDM machines. So if you need durability then SLA is not the way to go.

From what i understood is that some resins are as Strong as ABS! Is this not true because I do need something that can handle under the hood of a cars heat at around the strut towers and weather resistance for plastic emblems. Any resins handle that at all?!

All of my under-hood stuff has been printed in ABS or TPU.  Printed items have lasted for years on my old VWs and Alfa Romeo.  I've been reluctant to even try resin, for the reasons mentioned above.

What are you trying to print, that you feel you need resin for?

-Kevin

First and foremost, the Anycubic Photon and most of the sub $1000 Masked SLA (MSLA) printers, ARE NOT capable of producing a 100mm diameter print.  The print area is only about 120 x 68 mm, x 150mm in height.  If you have a relatively flat object (such as a 100mm round disk), you could orient it vertically, but if you need 100mm height as well, it's a no go.

You'd have to look for a printer like the Formlabs Form 1+, 2 or 3 or the Peopoly Moai.  There are larger format MSLA and DLP printers, but they are not cheap.  The cheapest thing you can probably find that will handle that size is the Moai.

As for the the strength of a resin print, there's nothing out there, not even the so called "tough" or "durable" resins come close to ABS, and with FDM you can also use Nylon which is yet another level of strength.

Bottom line is if you want great looking models that are not going to be subjected to mechanical forces, SLA is great, but if you need functional prints that are going to be subjected to external forces, FDM is the way to go.