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Broken mast repair

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Dizzyag
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Broken mast repair

Postby Dizzyag » Thu May 25, 2017 8:34 pm

Hey everyone
Just wanted to share my repair of a lift mast that broke. The original base plate delaminated and lift said there was nothing they could do because they no longer had the molds. So I 3d modeled and printed my own molds
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I cut off the old base plate and planned on putting this all the way through to the base.
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After that I laid up unidirectional carbon for the outerskin and sides and then built up the thickness of the baseplate with fiberglass. I attached a piece of Melamine to make the bottom of the plate and then leveled and plumbed the whole assembly to cure.
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After curing I found my mold release did not work so I had to sand off the bondo, sandable primer and paint I had smoothed the form with.
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I didn't vacuum the layup so i had a couple minor imperfections that needed filled and faired.
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Then Painted
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I haven't tried it yet and it was a bit of a learning process but I think it should work!

NorCalNomad
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Re: Broken mast repair

Postby NorCalNomad » Fri May 26, 2017 1:10 am

Great use of a 3D printer.

Did you leave the melamine in there or was it just part of your mold?

Dizzyag
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Posts: 6
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Local Beach: Waddell, Half moon Bay
Style: Wave and some HF
Gear: Switch Helium3s
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Re: Broken mast repair

Postby Dizzyag » Fri May 26, 2017 1:54 am

NorCalNomad wrote:
Fri May 26, 2017 1:10 am
Great use of a 3D printer.

Did you leave the melamine in there or was it just part of your mold?
The melamine was a flat object that epoxy would release from to close up the bottom of mold so there would be a perfectly flat surface to attach to the board.

NorCalNomad
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Re: Broken mast repair

Postby NorCalNomad » Fri May 26, 2017 3:50 am

That's what I figured you meant. Melamine + any sort of moisture = bad


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