Low buck projects- Let's see 'em! - Page 107 - SailNet Community
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post #1061 of 1413 Old 06-21-2014
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Re: Low buck projects- Let's see 'em!

It's all just magic to me - a Star Trek replicator.

I, myself, personally intend to continue being outspoken and opinionated, intolerant of all fanatics, fools and ignoramuses, deeply suspicious of all those who have "found the answer" and on my bad days, downright rude.
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post #1062 of 1413 Old 06-22-2014
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Re: Low buck projects- Let's see 'em!

There are machines that can do structural metal printing but they are still in the 200k range. Maybe some day.

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post #1063 of 1413 Old 06-22-2014
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Re: Low buck projects- Let's see 'em!

Here's a quick fix for a poorly performing cheek block.

I have single line reefing, and unlike many, I like it. I've managed to take much of the friction out of the system with a block at the tack cringle so I can usually reef without going forward. Frankly, 90% of the time I decide whether to reef before leaving the slip, so reefing under way is minimized.

But when I do reef, one frequent problem occurs with the little cheek block on my mast. This block takes the line from the boom and diverts it upward to the reefing cringle at the luff. That works fine as long as tension is maintained, but there are many cases where the loss of tension when under full (un-reefed) sail causes the reefing line to fall off the cheek block and later get fouled when tensioned. Ignore the white/green line in the picture below - that's a spare halyard that I lashed around the mast to keep it out of the way. The reefing line is the white/blue one:



I decided that the reefing line would stay put even when not under tension if I made a guide to put over top the cheek block:









The guide piece is made from 1/8" thick HDPE cutting board that I've used for various small projects. I used a hole cutting bit to make the round piece.


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1998 Catalina 250WK Take Five (at Anchorage Marina, Essington, on the Delaware River)
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post #1064 of 1413 Old 06-23-2014
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Re: Low buck projects- Let's see 'em!

The 3D printed parts reminded me of one of my recent projects, a simple bracket to hold a high gain wifi antenna to my shrouds.



I made the plastic bracket, it is cut out of a piece of starboard. I used my Taig CNC mill for the work, but a functional one would be easy to make using hand tools too. The loops top and bottom are for tying it onto the flag halyard, so that I can run it up to spreader height for use. When I don't need it the whole assembly is stored safely below decks instead of being permanently mounted.

I used it for the first time on Friday night when we were staying at Poulsbo Marina. My laptop and a couple of tablets could see but not connect to the marina WiFi from inside the cabin. Using the WiFi repeater (a Mikrotik Groove 52HPn) and that large antenna gave us a strong and fast signal.

I'll point out that CNC mills make it pretty easy to manufacture custom shaped 3D items out of stainless steel. Their are advantages and disadvantages to both additive ("printing") and subtractive ("milling") processes, but right now milling is the only affordable solution to making custom metal parts from computer drawings at home. The CNC mill cuts plastic just fine too.
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Last edited by Alex W; 06-23-2014 at 12:55 AM.
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post #1065 of 1413 Old 06-23-2014
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Re: Low buck projects- Let's see 'em!

Back when I was casting bronze bits and cannons (aluminium too) the mould was always a tedious part. Seem to me a 3D printed part in wax would be a great asset to lost wax casting
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post #1066 of 1413 Old 06-23-2014
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Re: Low buck projects- Let's see 'em!

Quote:
Originally Posted by Alex W View Post
The 3D printed parts reminded me of one of my recent projects, a simple bracket to hold a high gain wifi antenna to my shrouds.



I made the plastic bracket, it is cut out of a piece of starboard. I used my Taig CNC mill for the work, but a functional one would be easy to make using hand tools too. The loops top and bottom are for tying it onto the flag halyard, so that I can run it up to spreader height for use. When I don't need it the whole assembly is stored safely below decks instead of being permanently mounted.

I used it for the first time on Friday night when we were staying at Poulsbo Marina. My laptop and a couple of tablets could see but not connect to the marina WiFi from inside the cabin. Using the WiFi repeater (a Mikrotik Groove 52HPn) and that large antenna gave us a strong and fast signal.

I'll point out that CNC mills make it pretty easy to manufacture custom shaped 3D items out of stainless steel. Their are advantages and disadvantages to both additive ("printing") and subtractive ("milling") processes, but right now milling is the only affordable solution to making custom metal parts from computer drawings at home. The CNC mill cuts plastic just fine too.
And all this time I thought having my own drill press was pretty cool.

I, myself, personally intend to continue being outspoken and opinionated, intolerant of all fanatics, fools and ignoramuses, deeply suspicious of all those who have "found the answer" and on my bad days, downright rude.
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post #1067 of 1413 Old 06-23-2014
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Re: Low buck projects- Let's see 'em!

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And all this time I thought having my own drill press was pretty cool.
I don't even have a drill press anymore, I burned out the motor using a 6" hole saw on it to cut a G10 backing plate

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post #1068 of 1413 Old 06-23-2014
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Re: Low buck projects- Let's see 'em!

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And all this time I thought having my own drill press was pretty cool.
For the five years before sailing I spent a lot of my hobby time and money building bicycle frames and tooling. As a result I have a fairly complete (for a hobbyist, not a pro) metal shop in my basement. I'm always glad when I get to apply some of those tools to boats.

My blog (Alex Wetmore is always busy with something?) has lots of information on those projects. Here is an example project with far more machining:
Alex Wetmore is always busy with something? Blog Archive My new frame fixture

Some bicycle framebuilding tools that I sold helped cover the costs of my CNC mill:
Alex Wetmore is always busy with something? Store: Framebuilding Tools
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post #1069 of 1413 Old 06-24-2014
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Re: Low buck projects- Let's see 'em!

This is cheating I know, because I haven't done the project yet, and because the video isn't mine. However I plan to do this tomorrow to add cheap AC to my man-cave. I thought y'all might like it because it looks like cheap and effective boat AC and ice is often available.



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post #1070 of 1413 Old 06-24-2014
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Re: Low buck projects- Let's see 'em!

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Originally Posted by MedSailor View Post
This is cheating I know, because I haven't done the project yet, and because the video isn't mine. However I plan to do this tomorrow to add cheap AC to my man-cave. I thought y'all might like it because it looks like cheap and effective boat AC and ice is often available.


MedSailor
Attached is my version I did a couple days ago. HVAC does work right now and the temps inside the house got up to 89. When I did this, it lowered the temp about 5 degrees before it went back up but by then, it was dark outside and cooled down overnight. The way it's setup in the picture, the box fan is blowing up to try getting the cooler air circulating along with the ceiling fan. The ice melted pretty fast though.
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IMAG0002.jpg  

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