today's work

[MFR1964]

That will be a nice XXI David, getting steeringrods hidden away is a challence, those boats have even on a bigger scale problems with that.
There are still some idiots who think that building a smalll boat is as easy building a big one, believe me, it's not.
I tackled the seehund, but that is my limit in building mini subs


Manfred

[He Who Shall Not Be Named]

That will be a nice XXI David, getting steeringrods hidden away is a challence, those boats have even on a bigger scale problems with that.
There are still some idiots who think that building a smalll boat is as easy building a big one, believe me, it's not.
I tackled the seehund, but that is my limit in building mini subs


Manfred

Let's face it Manfred, we're both Certifiable. But I'm just run-of-the-mill crazy. You. You, on the other hand, are pure 'Silence Of The Lamb's' crazy!!! Those little boats of yours stand as stunning proof of that.

David
Fellow Whack-Job

[He Who Shall Not Be Named]

Like Clockwork

[He Who Shall Not Be Named]

[He Who Shall Not Be Named]

URL]

[Subculture]

Are you using the foam to reduce the amount of rubber required for the tool, or as a means to increase stiffness in the mould?

[He Who Shall Not Be Named]

Are you using the foam to reduce the amount of rubber required for the tool, or as a means to increase stiffness in the mould?

Both. The displacing foam helps to ensure proper registration of the rubber elements within the flask when preparing for a pour. This will become apparent come the next couple of installments.

[He Who Shall Not Be Named]

[redboat219]

Slush casting?

[He Who Shall Not Be Named]

Slush casting?

No. Though without a core -- as the tools appear to be at this point of construction -- slush casting or GRP layup would be the only way to achieve a hollow part. But I'm not finished with the tools yet, the next operation is to form a core that will produce hollow parts. That process should be completed today. Casting of the first parts tomorrow.

Here are some examples of RTV rubber tools that employ a core:

[RCSubGuy]

Masterclass on molding and casting complex parts. I love it!

[redboat219]

Still go into the pot for pressure curing?

[He Who Shall Not Be Named]

Still go into the pot for pressure curing?

Yup. Details on that process to follow...

[redboat219]

incorporate prop tubes in the horizontal stabs during final casting?

[He Who Shall Not Be Named]

incorporate prop tubes in the horizontal stabs during final casting?

Stay tuned... same bat-time, same bat-channel.