As a post with an interest in the swinging tool holder is current, I will include another use of this tool.
Short history, a friend of mine was building an outside BBQ plus bar.
The bar support wall was built in concrete with the ends of wine and beer bottles placed in between the cement much
like a stain glass window effect.
The trick was how do we cut up to 100 plus bottle ends without numerous breakages and receiving serious damage to our hands
from splintered glass.
The answer at the time was the use of my swinging tool holder to score the circular score line pattern first.
The bottles were held in a 7 x lathe using soft jaws, supported at the neck with a spring loaded revolving tailstock center.
As?commercial bottles are not truly concentric, so by hand cranking them in a clockwise direction, a simple round glass cutter was put into?
the swinging toolholder and pushed against the bottle to create the score line. The "swing" allowed a score line to be produced 360 degrees
by applying gentle hand pressure on the tool, see photo of a handle on the tool holder. The arm of the swinging toolholder followed the eccentricity.
also see the score line in a photo.
Without the swinging holder but by using a conventional solid toolholder it was not possible due to the eccentricity of the bottles to have a 100% radial score.
and dangers would be imminent, This would also be a real safety problem when splitting the bottle ends off in a second operation. read below.
After this "scoring" of the bottles, it was a simple dip of the bottles just past the score line in a large bucket of boiling hot water using an external gas stove, then immediately
the bottles were dipped into a bucket of ice water, this expansion and contraction of the glass severed the bottles at the score line, almost a 85% success rate, without serious cuts to hand and minimal fragments?of glass at the split line.
See attached photos not in any order.
Hope of interest.
John
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John
John Lindo