I wanted to try and see if the Veritas router Irons would operate on the old Stanley 71’s. A friend of mine Lucas Crenshaw aka KTMM loaned me his for testing.
They come in a wide range of shapes and sizes. I believe they run about $13.50 on average. Comparing that to what you have to pay for a set of originals for the Stanley 71. Now when the Stanley was new it was a bit cheaper.