Danny, did you put cutting oil in there too? You didn't comment on that, but i'm thinking it might help... if it doesn't mean issues later on wrt contamination and your inserts.OK, OK...you nag worse than my Missus
Today was a mixed bag of results, some good, some not so good.
Firstly I had a go at making a seam remover for some 38mm Square tube I want to slip inserts into.
The idea is that a "carrier slug" of the required insert tube size is prepared so that it will hold a piece of HSS tool-steel in position exactly where the weld seam is located.
A cap on this insert has a captive nut welded onto it and a length of "all-thread/studding" is used to pull the carrier through the outer tube and scrape off the protruding weld-seam.
Here is the insert carrier with the slot that the tool-steel rests up against.
This next picture just shows the slug inserted into the outer tube. It is in the vise only because I ran out of hands to hold things to take the picture.
Did it work? I hear you asking.
Well, Yes & No.
Yes it worked and removed several inches of the weld seam.
But then... it got stuck partway through the tube and the forces proved too much for the M10 studding and it snapped just where the welded on nut was applying the turning force against the friction in the set-up.
The outer tube was almost HOT to the touch, so there was considerable friction forces in there. and TBH I am not surprised M10 snapped (it is a little light for the job).
So, we have parked that while we go get some heavier gauge thread & nuts and we will have another go later.
Next up was a "trial fit" onto the Python Trike of a rack that I had made for an earlier trike (WD II). It was made of 12mm Square tube (mostly) and was exceptionally strong.
I will fit the rack to the seat support spar using the existing Seat-mounting fixing point at the top and I will create a new fixing point lower down on the spar for the bottom end of the rack.
Unfortunately I have run out of 10mm round tube so I will need to get some. As little as 1 Metre should do it.
That is all.
Just thinking out loud...