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Jasonb, thanks for the knowledge. Stuart calls out a rectangle of 'Copperite' so up to the builder to shape (two washers and one flange) and drill or punch. So no copper bead around the port like you'd see on a head gasket for instance. I have a buddy with a desk top laser. He did sets of D10...

The drawings for the Stuart Steam Boiler Feed Pump (SBFP) calls out material for the three pump gaskets as "Copperite" 1/32" thick. Google search turned up nothing. Is this just soft 1/32" thick copper of something fancy? Also, the cylinder gaskets are called out as "Oakenstrong". Obviously...

Years ago I bought box of various steam parts (loco and stationary). Lately I have rediscovered a small box containing most of the castings and hardware for the Stuart Steam Boiler Feed Pump (SBFP). The previous owner had started some machining, of varying quality. I have obtained the few...

HMEL: "Without doing research to see if these specs have been updated I will share with you what I have. To be considered a miniature boiler the following criteria are used. Does not exceed 16 inches in shell diameter Less then 20 sq feet of heating surface Less then 5 cubic feet of volume 100...

I also have a large chuck on my 9". Nothing bad has happened yet and the advantage of removable jaws outweighs any other consideration. All my machines have bronze bearings in iron castings, so I don't think galvanic corrosion is an issue on machine tools with this material combination.

If it's a vee-belt and you don't want to disassemble the spindle, just use a segmented belt. Flat belts are usually made to be joined with a pin, though some folks don't like the 'tick' every time the joint comes around...

Charlie Dockstader's valve simulator has Joy for both inside and outside admission. This has been around for years (pre-Windows). http://www.billp.org/Dockstader/ValveGear.html John

35 years of 2D AutoCad at work. On retirement my 'gold watch' was a Tormach PCNC1100. Went the Fusion 360 direction (free - hobby/retired/non-commercial) as I need to generate those tool paths to feed the CNC mill... Here's a little dress up of a Stuart Beam Engine part in Fusion and during...

Yes, mine has the zerks (still working on the conversion to one shot oiling). H&W has a oiler for the zerks ( Push N Lube Pump for Zerk Base | 12PB20 ), and I adapted a small grease gun to oil. John

No grease on the ways of a Bridgeport. Use way oil only. The grease will attract chips and other debris. My table and knee were all gummed up with grease and chips. Had to take apart to get the grease out of everywhere. Moves great now on a diet of Mobil Vactra. John

Nothing in the ASME Code (of 1974) shows copper plate as allowable in boiler construction, but copper tubes ARE allowed: John

In 1974 ASME Section 1 (my last code book) Riveting was fine, and I assume it is now as most US Tourist Railroads and museums repair their locomotive boilers by riveting. Here is the Nevada State Railroad Museum's 'Glenbrook' in process of being riveted and as finished. She is fully approved by...

Source for this please, Dan. The ASME Code (which our little boilers are generally and thankfully exempt from) cold water pressure test for fired boilers is 1.5 times Maximum Allowable Working Pressure (MAWP). On pressure vessels it is 1.5 times MAWP times ratio of material allowable stress...

Oilite (sintered bronze) is intentionally porous to hold oil for lubrication. Don't use where it needs to be steam tight.

"Your loco looks very nice, and your workmanship also seems very good!" Thank you! Here's a start on the Compound. The only aluminum is the base, the balance is iron or bronze. John

"How much did the plans cost?" I had some Friends Model castings (I am NOT a relation!) that I traded for both the Coventry D30 loco and the Compound drawings. I had a previous incomplete set from a Ray Riechenberg who had run an ad in Live Steam Magazine in 1995 for the Compound castings...

I have obtained drawings for the Coventry B&O D30 0-6-0 loco and the Coventry Compound marine engine. Happy with both. John K has also furnished several parts I was missing from my two kits.

John K can help you, he has the original Coventry tracings... http://www.friendsmodels.com/stationaryengines.html

The de Waal drawings do indicate that they are based on the Bill Harris design. I'm a member of a group that has about a dozen Bill Harris rollers stalled at about the assembly stage. We were all in the same town, now scattered in several states. I have most of the tanks and boxes made...

Here is a chart I put together for bolts and washers. The hex size and height is from Godshalls (dimensions in inches): Model Hardware Model Hex Cap Screws Scale Washers Drilling Size Hex Used Head Height Washer Land Outside Diameter Decimal Thickness Clearance Tap Drill Percentage...