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I have used Varsol with success

Tom, I'm old now and memory is not 100% anymore, my visit to CP was 40 + years now and the tour was amazing I have this vision of watching an axle being pressed onto a wheel I have this vague memory of the explanation given (reason) for the axles being machined with the high and low form and...

I made contact with Loctite.com here is their reply, straight from the horse's mouth so to speak, Walter, the optimum design to maximize the shear strength is a slip fit of approximately 0.002-0.004" for both products. Also, you reduce the chance of shearing too much product off upon assembly...

Tom, no I am talking real full size where the shaft has highs and lows and as it's pressed on the wheel, the highs roll into the lows giving filling the gaps giving a press-fit, or could it be a cold shrink? not sure, I toured the shops of Canadian Pacific in Winnipeg in the 80s

Brian, but I am quoting 620 and 680 specs for this type is a turning motion of the two components and slip fit it doesn't mention press-fit?

But how can you prove that its the loctite working as opposed to the press-fit? surely any loctite applied is squeezed out with the press-fit, yes?

Loctite is a plastic that fills gaps anywhere from .002-.015 and up, its application is that it expands as it dries, can someone explain why hobbyists and professionals alike use it on press-fitting two parts together under tonnage, surely that defeats the object, it's said it fills up all the...

And if you use tapered dowels for location if the alignment is not exact you can always re-align and use the taper reamer to re-align, can't do that with a parallel (straight) dowel?

When we made fixtures that needed a slip fit on the top plate we ground 3 120 flats on the top portion of the dowels leaving a thin portion on the dowels OD for contact in the hole Edmund........Alberta

Willray, I have also used wood as a backing and before that, I have used a piece of cloth under the drill bit, I just fold a small piece into a small square place it between the metal and the drill bit, Edmund...........Alberta

John, I would like a package of 10, I am in Alberta, Canada, my email is holmes_ca_2000 at yahoo.com postal code T0M 0K0, would PayPal do? Edmund

Steamchick, I do understand what you are saying but your post is too much for me to absorb at my age, I have done machining professionally for over 45 years and another 23 years as a hobby, I realize that chunk of metal was too much for my little lathe and normally I would not attempt parting...

Jack, thank you for the comment, trouble was the lathe was stalling and the motor was still turning and screaming on the smallest pulley so I went to the next bigger pulley for more grip, catch 22, I realize its not the best setup with the holder hanging out in a little block clamped to a 0.500...

If I had a bigger motor I feel sure the operation in this video would work perfectly and on a small lathe like the Taig this op is over the top for such a small lathe, so the old fashioned spring holder is not at fault, in fact, it does the job well,

I give up,

Smithdoor, wrong, Journeyman tooland die

Jack, I'm pretty sure it is the spring tool holder, Jack610 you are right on, that is exactly what it does, keep the pressure on and the tool moves away relieving the cut Edmund........Alberta

I notice no member has mentioned the old spring parting holder design, I built one scaled down for my Taig lathe and you can't have a lathe much smaller than that it holds a 3/8 x 0.040 blade, it has improved my success immensely, sometimes new is not always better, Edmund.........Alberta

I have just come into this conversation and I'm not sure if this can be of help, I recently received an email from Albany County Fasteners they have a new item in stock that may be worthwhile for some https://www.albanycountyfasteners.com/search.html?&Search=thread%20gauges...

Blockman, it might be worthwhile to drill a very small hole close to the bottom of the joint to release air you may find the head or stem will lift as you heat the parts, Edmund............Alberta