G S Haydon":3qhvm22e said:Mike, it might just be my wooden planes but when I look down the plane iron after securing the cap iron there is a visible deflection, very similar to a Bailey, sometimes more.
There is always some deflection on a double iron, this means the lower part of the iron and the top are in contact with the bed, the middle is not. On the limited amount of planes I've seen there seems to be evidence on this with polish on the top of the frog and at the bottom where the iron seems to be in closer contact.
I bet the wooden planes you make are wonderful, no question. I'm assuming you've made laminated Krenov style planes with a cross pin? if you don't mind me asking are they mainly smoothers or at least planes working on wood that has seen the heavy lifting done by machines? With the lighter touch and finer work it's not perhaps the hardest workout for proving there is no benefit to abutments and sprung cap irons.
If there was no benefit to having a wedge and abutment why were great lengths taken to make them that way? Same with the cap iron, it's all very precise stuff, highly evolved over a long time frame by people who were building totally by hand. More costly in terms of time and money spent.
As has been alluded to on another thread there is nothing like the threat of starvation to make someone fast and efficient at what they did. If all the effort of abutments, cap irons etc were a waste of time they would of vanished within no time.
I also don't think it's beyond reason for us to question the current designs and offerings provided and compare it with the past and discuss how they might be improved or benefits of modern designs. Modern makers have the quality and attention to detail to very high standards but were they made for an experienced hand tool user market? Surely the volume of most talented and experienced hand tool users were gone after WW2? I hope I don't offend anyone with this comment but I'm not sure there are many people alive today who could replicate the pace, rhythm and quality that people were able to do in the past.
Very well put, Graham. Before anyone can attempt to put together technical papers describing why something modern is better, they first have to understand the underlying drivers of the original designs - economic need, professional makers and professional users. Those things are very hard to overcome with makers testing their tools using machines and getting feedback from non-professional users.