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[Jack]

i came accross this article in a populer mechanics shopnotes reprint last night and i thought it might be interesting information for top makers eh  no idea if this makes sense, ive noticed some fairly sketchy things in those shopnotes, their willy nilly attitudes towards what i know to be very dangerous chemicals is slightly concerning @-@ anyway let me know if this works or makes any sense at all eh 

[lincolnrick]

Makes sense to me. To cut the inside cleanly, you're re-enforcing the thin walls from the outside by winding string around the piece. First thing I thought of was a goblet where you want the cup to be very thin walled (for some reason).

[cecil]

I have had to do this while cutting large parts with thin walls. I've used rubber line and even a watter hose. You wrap the hose around the part then fill the line with watter. This stops the vibration. I've cut parts as big as a house. I worked at Westinghouse for five years. One horizontal had about 400 inches travel.