"Tanner-'op" wrote in message
...
dennis@home wrote:
"Tanner-'op" wrote in message
...

[1] Can be cut back at the workshop when you are not busy and
stored ready for use, and one size fits all for most jobs (on door
and window frames that is) - with the added bonus that they can be
used for a multitude of other purposes when "caught out" or in an
emergency.

One size fits all?.. not a chance.
If you are making them two foot long and only 3 mm thick maybe.
If you try and fill a small gap with them you only get support on the
edges and then you can't get a secure fixing.
You need several thicknesses to do the job properly.
You obviously lack experience using them.

Dennis,

45 years as an apprenticed trained carpenter (including a 5 years
apprenticeship) with City and Guilds qualifications - along with
qualifications that allow me membership of the Incorporated British
Institute of 'Certified' Carpenters (and a few more in-between) - and I
have fitted more door frames of various types than I can remember (and one
size of folding wedge will generally do all [unless the brickies have
f****ed up of course, or you are fixing to something like a 'No-Fine'
building - if you are not sure what that is, Google the term]) and with
most of my working life in building maintenance - private and public (with
some 20 odd years as a general foreman before retirement) - and door
frame fitting is the subject of this thread is it not?

Is that enough experience for you?

They are just a couple of wedges pointy side in, they are nothing new and
you don't need to be shown what they are to work it out for yourself.

Its also easy to see that if your wedges are too thick to fit in the gap
before they reach the other side that they will only support the very edge.
So one size will never do all for most people.