The Home Machinist!

They needed to make the drawtube captive on the back end of the spindle so the unscrewing it would drive the chuck off the taper.

Henkel says that primer does more than just speed curing and that it is required on some materials including stainless steel. https://www.google.com/url?q=http://www.loctite.com.au/aue/content_data/354580_7128_Do_It_Right_Guide_v5_Approved.pdf&sa=U&ved=0ahUKEwiAj6avxJHfAhWG24MKHUHNCJkQFggUMAA&usg=AO...

Tom1948 wrote: ↑

Sat Dec 08, 2018 5:04 pm

Loctite makes a primer. Kind of pricey also but speeds up curing time especially in cooler weather.

You should still clean first.

I use either starting fluid or acetone.

tornitore45 wrote: ↑

Sat Dec 08, 2018 11:10 am

It is my experiences that long taper will not keep under radial forces without a drawbar. Any machine that must pass stock trough a chuck can't really use a taper drive.

It could with a tubular drawbar. I know of no machine that uses one, though.

Unfortunately Fastenal now only sells business to business. Hmmm. I wonder if that's true in all areas? I haven't stopped by the local Fastenal in a while, but they've offered mixed service in the past, from not selling small quantities to over pricing, even charging shipping on items forwarded wit...

Like Pete said, on my small 7” Dalton, (OXA QCTP and 1/4” bits) diameter size makes a big difference how far out I can machine along the axis without support. Can’t machine 3/4” round stock at 2” from chuck without the tailstock support, for example. With 1/2” to 3/4” diameter bronze round stock it...

Grey iron has better damping and lower friction than ductile iron and so may be better for purposes such as lathe beds.

tornitore45 wrote: ↑

Fri Nov 30, 2018 9:46 am

Just looked up the price for Kerosene. $8.74 one gallon at Walmart. Typically $22 for WD40

Sure. Kerosene doen't come in a convenient spray can, though.

Fred_V wrote: ↑

Fri Nov 30, 2018 8:14 am

Kerosine for alum.

Same as WD40, for this purpose.

Tubing that completely full of liquid right up into the transducer will transmit pressure changes very accurately and quickly. Trouble comes when there are bubbles in the tubing. Then all the fluid up to the location of the bubble has to move as the bubble expands and compresses with pressure changes.

Before I got a lathe I lathed things on my mill (converted Avey, above). Kind of like an upside-down vertical lathe.