The Home Machinist!

John, Take a look at this sketch D Valve exhibit.JPG The Blue is the steam chest and the red is the D Valve Some standards. The wall that should be .125, you said is .100.....thats OK as long as both walls are equal The D Valve must cover both steam ports exactly and the Radius inside of the D Valve...

How fast can I drive on a mountain road ? Up or down direction ? Gravel or paved? Safety rails ? What kind of car, bus or truck ? Not making fun of the question, but I think Bill covered some of this in post #2 . It's the proverbial question in many minds, but like the mountain road question, there ...

The chief characteristic of "Spindle Oil" is no waxes.
Waxes cause a build up which eventually becomes crude in the bearing.
In a pinch, Hydraulic Oil works as a good spindle oil
10 Wt None Detergent Mineral oil is good and is found in Farm supply stores
Rich

Bill
Really nice of you to post that info here. thanks!

Rich

Your idea of using a stepper motor and a switch is a good one for a quick remedy to the crossfeed problem

Rich

The problem that we have with the smaller fireboxes is that just getting the currently available coal to burn is a never ending problem. I hear my house with coal, and living on the edge of Amish communities, getting coal is not a problem. However the clinkers and slate that come with it, while man...

Price reduced to $100 + shipping ---3/26/2024
Rich

I forgot to give you the reference to NTN number system and class
Go to Page 8
https://ntn.ca/wp-content/uploads/2019/ ... EN-Web.pdf

Rich

You want https://www.skf.com/group/products/rolling-bearings/roller-bearings/tapered-roller-bearings/single-row-tapered-roller-bearings/productid-30208 but before you buy, i suggest you look at Roller Bearing Precision classes on PAGE 3 at https://www.timken.com/resources/precision-tapered-roller-be...

No Longer available !
A member here stepped forward
Thanks for your interest
Rich

Well we try again, My first post disappeared . I have a programing manual and a parts manual for a HURCO CNC SM 1 mill available free to anyone with a SM1 mill Just pay postage. They both seem to be in good condition...Given to me, but I have a KM3 mill-totally different email at ...grnbaystmr AT gb...

I have two Cylinder castings for a full size Live Steam Powered Boat Engine One casting is Cast Iron and the duplicate is Aluminum , so the builder can use the aluminum one for machining setups The as cast bore is 2 5/8" and the cylinder wall OD is 3 7/8" and the height is 4 7/8" ( Fl...