today's work

[redboat219]

Are you filling all the holes flush or partially filled to aid drilling out in the production hulls?

[He Who Shall Not Be Named]

Are you filling all the holes flush or partially filled to aid drilling out in the production hulls?

Yes. Indented for later boaring.

[He Who Shall Not Be Named]

[CollectiveBorg]

My first step toward building my own radio-controlled boat. I cast brass propellers for Project 941.

[He Who Shall Not Be Named]

My first step toward building my own radio-controlled boat. I cast brass propellers for Project 941.

Investment casts! Excellent.

What's the plan once you chop off the sprue -- how are you going to formulate a fixture to hold the work as you bore out the propeller shaft hole?

I applaud your effort so far. Nothing looks like brass other than... er... brass!

[redboat219]

Think this deserves it's own thread.

[He Who Shall Not Be Named]

Think this deserves it's own thread.

Agreed!

CollectiveBorg: you gotta give us a complete 'how-to' on the investment casting process. Excellent stuff!

[CollectiveBorg]

In which section of the forum should I create a thread in which I describe the investment casting process?

[Akula54]

In which section of the forum should I create a thread in which I describe the investment casting process?

I think here: TIPS'N TRICKS - The Sub-drivers Forum

[He Who Shall Not Be Named]

[CollectiveBorg]

Well, now I'm in trouble. Isn't it possible to add me to the spam filter?

Seriously, I don't post anything illegal. I'm just talking to submarine builders.

[He Who Shall Not Be Named]

I see you already have half the tools you need to master vacuum casting using burnt models!

Though marked, 'unapproved', I still got your post.

Yes, I'm well equipped but don't have a burn-out oven or crucible for melting the brass ingots (I was trained by a Jeweler decades ago, but never had a use for the process in my business)

[CollectiveBorg]

Though marked, 'unapproved', I still got your post.

Yes, I'm well equipped but don't have a burn-out oven or crucible for melting the brass ingots (I was trained by a Jeweler decades ago, but never had a use for the process in my business)

I created a topic ( Investment Casting: Everything You Were Afraid to Ask or Didn't Know), Where I'll describe, show in pictures and videos, what I do every day. I'll show all the steps step by step specifically for this forum, using the example of a product required by modelers.

I apologize in advance; English isn't my native language. But if you're interested, I'll tell you everything you need to know about how to do it without spending a lot of money.

By the way, I use the same technology to make things like this:

(Yes, this is my work, it's 14k gold, these aren't photos of a neural network; I have photos of the intermediate stages as proof):

[CollectiveBorg]

Though marked, 'unapproved', I still got your post.

Yes, I'm well equipped but don't have a burn-out oven or crucible for melting the brass ingots (I was trained by a Jeweler decades ago, but never had a use for the process in my business)

You do not need a crucible or a specialized melting furnace (although a burnout furnace will be required, and ours is homemade. I'm confident that you can build a similar one yourself if you want to) to melt brass.

Using a gasoline torch, you can easily melt up to 20 grams of brass. If you have a helper, you can melt even more. I can do it myself, and you'll see that firsthand.

In this topic, I will show you homemade solutions that, most importantly:

1. Work.
2. Provide the required technological process.
3. Cost only pennies to build and can often be assembled from materials you might find in a scrapyard (and you probably already have half of what you need).

Do you have a welder? No? That's fine—you can build it from square tubing using brackets and bolts. But I'll also show even simpler examples that will likely be familiar to many of you.

I'll show you everything.