Search results

Heaters are designed differently than boilers. First you have to decide whether you are building a model boiler or something to supply steam. You have what looks to be a low pressure heater and without knowing the internal bracing it would not be wise to use it as a boiler. If building a...

Its my opinion that you can not go by age. You have to know the child make an assessment of his maturity and intelligence. That does not mean that the child will not mature it just means some learn faster and can take responsibility earlier. So you are the only judge. And you also have to...

I would not use aluminum for an exhaust gasket. The temperatures would be way to high for that service. Although these are simple systems they need to be fitted properly because of the carbon monoxide issue not to mention what the hot gases will do in that location. There are forces generated...

Yes, I have a thought but I can not prove it. If a shear cut the metal the blade will have compressed the metal distorting the shape enough so that a clamp will force that area down against the table until it is flat this will force the thicker section up. The question is will a plate cut by a...

Just recently have used LibreCad. The learning curve is not steep it is vertical. It needs a good learning program and help system. Scaling to print is difficult. It looks similar to AutoCad but the command paths are tortuous to say the least. It has potential but it will take a lot more...

I am curious if it is legal for Autocad to deny you the use of that program by deactivating a license. I know they can discontinue support but deactivating the license is a taking something you bought and paid for. It would be a very good question to ask a lawyer. A read of the fine print...

Thanks for the feedback. I would not have thought it would begin at the drawing pallet. I would be tempted to write the G- code manually just get out the extraneous commands. However am a bit curious what program would correctly give a good code?

Bob: I am by no means an expert in G-Code. The G code should progress from one point to another point. Looking at pictures it appears you have like a 100 defined points that should not be there. I would extract the G-code file command and inspect the points. On a straight line you should...

Before I would do anything with the headstock I would check the tail stock. If not using the tailstock, then check the chuck, You can lift the headstock on most lathes maybe clean the ways and carefully reset it. This requires a lot of work. And I would try to get a hold of the manufacture...

I favor the use of jigs. The simpler the better. Sometimes I can make them so the work stays in place so removing it from a chuck is not necessary. In your example I would probably make a sleeve to fit over the part. Reduces the chance of a measurement error considerably. The disadvantage...

British Pipe Standard fittings are among the most popular of all foreign threads. These threads come in 2 versions: parallel (BSPP), and tapered (BSPT). The thread flank angle for both tapered and parallel British threads is 55°. NOTE: It is a common mistake to identify a BSPT (tapered) as an...

First thing I noticed was the dirt and the rust. The price is way to high. Even if there exists tooling in the drawers It will take a lot of work and cleanup. Not sure what voltage it is. I suspect it was brought in from somewhere else. There are no indications of use based on the dirt so...

I know for a fact that a hot engine will cool and the moisture in the air will condense on the internals of the engine. Has to do with the hot air absorbing moisture and then dropping out as the air mass cools. So it depends on how its stored. Where you see it for the average guy is in his...

There is an additional effect of more practical value. It makes the stack work as if it was taller. Without that boost in draft the smoke will spill out across the top of the engine right into the engineers cab and they are not likely to survive that for very long. That venturi is designed to...

To calculate the energy in superheated steam you will use the tables for superheated steam the values will be in btus per lb mass or if you are using metric they will be given in metric units. Select the pressure and choose the temperature the steam is at. Saturated values will be in its own...

I use windows and have for a long time. The reason used to be I understood it and I felt the other operating systems did not have the choice of available programs. I used to have a good handle on it but not so much now. Windows changes to 11 make two of my newer computers incompatible because...

I agree with you the piston wall does not make a lot of sense. But I also do not know what or how they make their calculations. I can only reason that the double acting piston in their case is hollowed out to the rod connector and this volume is added to the expansion volume of the cylinder...

I would like to clear up some misconceptions on steam. Steam can be classified as saturated or super-heated. Both property states can exist at the same pressure except super-heated steam has the higher temperature. There are tables which define the temperatures at various pressures. Its not...

I do not know if this will give you any useful information but I based my VFD conversion on Clough42 on youtube. He also has developed rather interesting approach to coordinating the spindle with the lead screw. He is able to do metric or imperial threads with simple settings which I am very...

Actually the power output is a criteria of the original design specification. It starts with a mass flow diagram and the pressure and thermodynamic states are laid out to develop a theoretical horsepower or kw/hr design point. With the turbine itself it starts at the nozzle block control valve...