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I haven't built the burners yet . It will run on alcohol . I'll take your advice on the spring and make sure the valve works every time. The boiler has 3 external 3/16" water tubes. Boiler tested at 60 lbs and held for 30 minutes with hydraulic test. Will test again under steam . I do not have...

Thanks, I will make the valve in a couple of days . The safety valve I was supposed to buy I cannot find anywhere. Most of the valves that would fit open at 60 lbs pressure. 30 lbs is the pop off pressure I need. mike

I tried a pin vice but the runout was too much. Tried a few different things but none were satisfactory. Then I made a holder, 1/2" diameter CRS 4" long. Turned it down slightly so it would be concentric. Bored a 1/4" x 3/8" hole for a wood dowel. Bored on the lathe with the pin vice into the...

I have a drawing of a simple safety valve that I plan to make. The valve is spring loaded and variable pop off. Can the valve be tested at first with compressed air? Pop off is 30 lbs. pressure. Every valve I have searched for is not variable and starts at 50 lbs. pressure. I would like to...

I did a search for digital vernier. Every search showed a digital caliper even though the caption showed " vernier". I have three digital calipers, 4" right hand. 6" right hand and a 6" lefthand digital calipers. The only one I use is the 4" caliper. Almost always I use a dial caliper and...

I used the multi- diameter arbor once. It is in a drawer never to be used again. Then made an arbor for 3" slitting saws that works perfectly.

They resemble cone shape step drills that I believe come in 3 diameters. I have a set of two They work well . Instead of using Silver & Deming type drills I use these. The cone type can be sharpened, easily actually. The flat portion that is the cutting area is honed. The diameter does not...

All the cutters are from same source. They are correctly engraved with the # of teeth and the cutter #. the tooth range is engraved on the cutters with the DP also. I did use the correct cutter for the number of teeth but I used the wrong amount of turns and holes on the rotary table. Now that...

Your exactly right. I went thru the whole process this morning. Checked blank size ,correct plate etc. Then I saw what I did wrong. I used the wrong amount of turns. I used 1 complete turn and 14 holes, this is a mistake. I then used 5 complete turns and 10 holes. Now the pinions are perfect. 16...

I am using a rotary table. The locking pin is set on the #16 circle. One full turn and 14 holes. The mandrel is not slipping or the blank is not moving. Each gear except for the pinions looks correct , but until I actually counted the teeth I found that the number of teeth was incorrect. 100...

I cut the blank first. Number of teeth +2 divided by DP 120+2=122 48= 2.541 I used the cutter marked #2 the #2 cutter would be correct if they were DP. I counted the teeth in the bull gear , about 100 teeth instead of 120. Next I will use the #7 cutter that should produce 120 teeth if my...

I just got back from daughter's house and went out to the shop. I counted the number of teeth in several size gears. All were the wrong count. 120 tooth was about 100 teeth. the pinion gears were too fine to count, tomorrow I'll cut new ones with the #2 cutter . You are correct, the numbers are...

Thanks, I am sure you are correct. I will try the # 2 cutter Monday morning. Come to think of it , I do not recall seeing DP on the cutters, might say module. I'll run out to the shop this morning to check on this. mike

The cutters are made in China. The teeth look straight, no curve . I had no problems with the other gears. I have four cutters, #2 , #4 ,#6 and 7. The gears all look and mesh well , except the pinions. It appears that there are a lot more than16 teeth. I don't have a camera , the phone I had...

I'm working on a tractor with plans from Rudy K. The boiler has tested good and now I'm making the gears. So far all the gears I made except for the pinion gears that mesh with 120 tooth bull gears. I have made them but the gears do not look correct and do not mesh well. I ordered a ser of 48 DP...

My first engine was an oscillating engine with a brass 6" nipple for the cylinder. I think I used a holesaw to cut the piston, then turned it on a drill press to sand it smooth. I do not recall what the piston was made of. At the time the only metal tools I had were the DP and hand tools. I made...

Great post Jim. You gave me some ideas for burners I need to make for a model Case tractor. Never built a burner yet, all my engines have run on compressed air so far. mike

I installed a new bay window in my sons home a long time ago. The window I removed was a jalousie window with 1/4" plate glass 4" x 16" . I saved 10 pieces , did not have a use at the time , to good to throw away. I glued sandpaper to the glass with the adhesive used to adhere sandpaper to a...

Many years I built a locomotive that was supposed to run on steam. The boiler drove me nuts, fix one leak and another appears. Finally I decided that this is not fun anymore and ran the locomotive on compressed air. Runs great, but is a show piece on a shelf . Several months ago I decided to...

Kel I also have the Cummings mini-lathe and the G0602. I bought the 10x22 years ago for $1025.00 plus $65.00 shipping. I made my own wood bench. Excellent machine, after many years the motor gave out and replaced it. Other than that no other problems. A quick change gear box is not available...