Cut 4 joints to try system out. Worked well. Tip to use slight rabbet gives neat interior corners. Wood dust and glue works better than any purchased filler. Had to buy Japanese dovetail saw as my splined dovetail saw did not have blade depth needed with these guide blocks. They work!
tried other saw guides but this one has all the features you need to do a great job.
I cut my dovetails with a 10 degree teeth cut blade so your 8 degree jig doesn't work for me. However, your 90 degree side of the jig is extremely useful.
Started using this and am amazed how useful and the variety of uses. Great tool.