Metalurgia, forja y fundicion

A little while back I mentioned in a post that I was working on a Gatling gun. I was asked to post photos but declined thinking it would be considered off subject. A moderator “Kvom” advised that a Gatling gun post was acceptable, so I posted a few photos of the project in progress without any complaints. The project is now complete and I would like to present it here.

The American ATF does not consider the Gatling as a machine gun as each shot is loaded cocked and fired mechanically by...

Gatling Gun

I'm looking for a set of plans and notes for a Shores Little Hercules engine from someone who has finished theirs. I bought a kit a while back from a guy who was cleaning out his father's estate. The seller could not find the documentation when he did a cursory check. Yes, I know that someone is now selling the kits again. I am trying to find an alternate source that is less expensive than the distributor's current price. Alternatively, I'll also consider a whole kit (including...

Wanted: Little Hercules plans and notes

These are the best castings I have ever seen They are die cast not sand so finish is really nice. I bought these years ago from the guy in Norway I think. The flying club there
commissioned a professional machinist to build the engine and then sold castings to defray the cost. Building instructions included. I had dreams of using these on a v twin but
realistically will never happen so I would sell them. I think they are worth $US100.
Bob

Today seen the beginning of a new engine.---The design phase, at least. After recently seeing an Upshur T head coming together on HMEM and a post by Vederstein about building a T head engine I thought that would be an interesting engine to design and build. I'm in no rush to start building, but I know how that generally works. I spent most of today bringing the design along to this stage, and will probably finish up the cylinder head tomorrow...

T head engine by Brian

Has anyone seen or heard tale of a Moya Burner larger then One Inch? I saw several people going smaller??? has anyone seen larger

Thanks in advance
V/r
HT1

I'm contemplating buying a house in south Virginia. The house is between 120-130,000. I've spoken with the bank the total monthly costs with mortgage/insurance/town tax is $683, the closing costs are 5500, interest rate is 3.00% currently. Has a new roof, new floors, new kitchen, electricity was redone for most of the house to meet code. I'm thinking of going to see it in person this week and probably getting a house inspector to come see it with me to point out potential issues.

I'm...

Buy a house?

I found this article on my old blog and just had to re-post it. This was written by Bob Lane some 20 years ago and it is just superb how to he can make something look like an engine from literally rubbish. A great way to add realism to a radio controlled model plane is to make a dummy engine:



The...

A Dummy Engine

I'm looking for information on the installation of a Servo/Align type power feed on the X axis of my mill. I picked up a Chinese table feed but there is no adapter for the type of table I have. I have no problem building what I need but instead of reinventing the wheel I'm looking for at least pictures of an installation on my type of table as the Bridgeport style adapter is not correct.

I am making another couple aluminum flask sets that require 12 pcs each set. Since the patterns lend themselves to convenient matchplate molding, and since I hope the matchplate will save me some time overall, (and since I was curious about the technique), I decided to give it a go.

Here is the first pair of side pieces for which I am making the matchplate. Both sides of the patterns are basically flat with two rectangular recesses. So, on one side I am just attaching the drafted pattern...

Matchplate Trial. Simplest posssible patterns. Good learner Project

When I first started casting I thought using plaster would be a great idea until I poured molten aluminium into the plaster mold. After many hours of drying in a oven the plaster still erupted like a volcano and lucky for me I was not burnt like my subscriber in his video. Have a look at 7:37 face shields are a must have item in the home foundry.

I just removed the blades and use this heavy pinion gear. I have a long pole with a flat bent end I use as a plow after all the clumps get broken up and I slowly drip water in with a two liter. I can get a little more than a 14x15 and a 4 inch drag and 6 inch cope mold a batch. Takes 10 to 15 minutes a batch and about five minutes of that is manually plowing it to make sure it's getting turned over enough. I will eventually do more upgrades but this actually works quite...

Simple way to mull

This is my first go at joining a forum and determining how it all works. In 2014 I was able to get a number of castings for a 1/6 size Pratt and Whitney Wasp Junior Radial Engine. I have done some machining and due to a number of reasons I have had to leave the project.
I am hopeful that I can get back to it soon.

The item that I would like to 'find' is the 9 cylinder head castings, which I understand were on sale in those days.

I wonder if somewhere in some-ones parts boxes there might be...

Aero Engine

Hello all!

I have zero experience casting but I play in the heat for a living. I am a firefighter in my city and have lots of ideas to cast once I learn. Self taught at most things and really enjoy the learning process. Recently complete a scratch built electric bicycle with salvaged batteries that tops out around 35mph. I 3D printed lots of parts for it and I can imagine these parts in aluminum. So, I would like to have a go casting them. Also, working on a QueenBee CNC machine (router)....

Hello from Tucson, Arizona

Hi Guys

As the title says, I am wondering if a cheap infrared thermometer could be used to measure the temperature of a pot of molten aluminum. I have been casting aluminum for several years and have never had a pyrometer, but judged pouring temperature by color and fluidity of the melt. It usually works fine, but I would like to be more precise.

I was in Harbor Freight the other day and saw an infrared thermometer that was rated to 2200 degrees F (I think).

Have any of you experienced...

Use a non-contact infrared thermomator as a pyrometer?

Hello everybody!
I'm from Dallas and recently got into this hobby because of a combination of my packrat habits, my overly paranoid security habits, and my companies Covid benefits package!

I'm a natural packrat. And a few months ago I was cleaning my workshop and came across a stack of hard drives from every PC I'd owned back to around 1995.

I'm a paranoid person because I work in IT security and know it's never safe to throw away an old hard drive, but needed some way I'd feel...

Hello from Dallas (Obligatory first melt post!)

Just a general question about melting bronze. I have a number 10 crucible and was wondering what the melt time is to pour. I know I know it will vary for the most part but.... I'm using propane for heat in a small furnace. I don't have a way to check temperature on my melt times. Right now I'm about 30 to 35 minutes on my poor which I'm not sure is going to be hot enough due to the fact that some of my molds are not filling properly. Any help is appreciated.

Thanks

So I was reading one of the bentone data sheets and it mentioned that VG-plus was 94-100% quaternary ammonium bentonite. So it just so happens that I have a few litres of a "Quat" or quaternary ammonium compound lying around as a 40% water based solution. So with a scoop of western bentonite into a jar and a very generous splash of the quat, I stirred it thoroughly. I thought it was going to be too wet as I added a fair bit of the stuff to the bentonite but the bentonite sucked it all up...

Making bentone experiment

Organo Clay or Bentone for use in making K-Bond Sand. 20# of VG-Plus (Bentone) for $82 incl. shipping. 20lbs is enough to make 330lbs of K-bond sand. 10lbs for $50 based on current UPS simple rates. PM me for smaller quantities.

K-Bond is named for Kent State where it was developed by one of Tom Cobett's Students.
It is an almost smokeless oil bonded foundry sand for casting zinc, aluminum, brass, bronze and iron.

See this link for the recipe:...

Bentone for sale

Hola! Como andan.

Despues de tanto tiempo vuelvo a andar por acá.

Me di como dos meses de vacaciones, pero hace tres semanas me he puesto a hacer el cuchillo que les presento ahora:

Lo llamé "Barracuda"

Especificaciones:
-Punta: Drop point (aserrado)
-Acero: 5160
-Largo total: 32,5 cm
-Largo de hoja: 18 cm
-Largo de empuñadura: 14,5 cm
-Grosor: 5 mm
-Peso: 441 g
-Material de empuñadura: Guayubira con separadores plasticos

Vídeo:

Enlace directo: https://youtu.be/yFDb6POeesg

Imágenes:

El formato del cuchillo es debido a un diseño que habia hecho hace dos años atrás. Me ponia a dibujar diseños "extravagantes" o por lo menos muy vistosos... los iba guardando y me los olvidé en mi pieza.
Los encontré hace un mes y éste es uno de los que me lancé a hacer.

A pesar de todo, la parte que mas me agrada es la empuñadura con una defensa muy gorda, aunque podria llegar a molestar el dedo indice al usarse por mucho tiempo.

Ojala les guste!

Saludos.

Buenas, amigos de los filos, otra restauración cargada de imágenes (ahora que no las necesito revelar).

Estuvo bastante tiempo a la venta, al final me fijé en ella. Era como para pensarselo, su estado no era el idoneo, sentí su llamada y la adopté sin más.

Antes de evaluar mis opciones la limpié un poco.

Podía continuar para dejarla bonita pero las holguras seguirían ahí, opté por el camino largo.

Sus cachas acrilicas eran muy finas, había que ser muy cuidadoso. Mecanicé asientos nuevos para enrasar posteriormente.

Repasé cada componente y comencé a montar.

Los muelles de carbono fueron pavonados de nuevo.

El remachado me tuvo acojonado, no tenía margen de error.

Antes del pulido final.

Lista pués, a la pasarela...

Clásico sacacorchos ranurado.

Sus cuños.

La delgadez de cachas, forros y separador, más el fino ajuste la hace muy compacta.

Con sus útiles expuestos.

Acto seguido le haré una funda de cuero fino de la época, la mostraré en este post.

Espero que sea de vuestro agrado, feliz fin de semana, saludos.

PACO.

Recién terminada la funda bolsillera.

Junto a la vieja funda y una colega también alemana que fué recientemente presentada.

La KMF con útiles similares es más voluminosa.

Me ha quedado un tamden de lujo. Que tiempos...

Pasadlo bién, un saludo.

PACO.