For those who use both, which do you prefer for printing Hulls?
FDM or Resin?
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If the hull has a lot of fine detail, then resin is king. FDM tends to produce a stronger result, but needs more work to get a good finish. FDM will generally work out much cheaper in material costs.
I mainly work my patterns by hand using wood, but have used 3d printing as a tool for smaller patterns like control surfaces and jigs, then make a tool and mould items in GRP. -
If the hull has a lot of fine detail, then resin is king. FDM tends to produce a stronger result, but needs more work to get a good finish. FDM will generally work out much cheaper in material costs.
I mainly work my patterns by hand using wood, but have used 3d printing as a tool for smaller patterns like control surfaces and jigs, then make a tool and mould items in GRP.Comment
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I've just used a generic brand of ABS like resin off ebay, Elegoo and Anycubic are fairly popular and reasonable, avoid the water washable stuff though. I've used my FDM far more though.Comment
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If you want make a printed hull really tough, sand the inside and line with some epoxy resin and cloth. Resin or FDM, that will hugely strengthen the hull.Comment
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I like ABS-like resin, but it can be brittle. I mix my resins to get a result that is tough and resilient to breaking. Siraya Tech has one (I have not tried yet) that is similar to what I use https://siraya.tech/products/siraya-...abs-like-resin
If you can cut, drill, saw, hit things and swear a lot, you're well on the way to building a working model sub.Comment
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The new generation of fdm printers give a very good surface finish but resin gives better detail. Resin is pretty strong if the hull has a reasonable wall thickness. The mid size resin printers are big enough for the hull sections that most people have in their files. It is messier than fdm so you need a dedicated workplace for it. I would get at least a small resin printer to print out detail parts. That being said, if you have no experience, start with a new mid size fdm printer, they are much better than the old ones. I use esun ABS like filament and sira tech ABS like tough grey or navy grey resin. Resin costs about twice as much as filament. They are both sold on Amazon.Comment
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