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Private member DiscussionGeneral

Uses for Methacrylite

Recently caught wind of two-part methacrylite adhesive via Adam Savage. He mentioned he has a quick set time (30 minutes), a little more flexible than epoxy, but might not be as strong of brittle bond. Anybody have experience with this stuff?

epoxytoolsglue
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Private member DiscussionAcoustic Builds

Interesting article about the velocity of sound of epoxy plus glass beeds

https://www.sciencedirect.com/science/article/abs/pii/S0022369719307097#:~:text=The%20results%20show%20that%20the,that%20of%20the%20epoxy%20resin.

articlesbuildingepoxymaterial science
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TLDR: The specific acoustic impedance of the composite is 0.72 × 10⁶ rayl when the HGM content is 20 wt%, 70% lower than that of the epoxy resin. The minimum acoustic attenuation coefficient of the co…
Private member DiscussionDesign and Testing

Laminating carbon fibre in neck blanks + before and after measurements

Two pieces of maple, each of which were measured beforehand and then cut up and epoxied back together to keep things as consistent as possible. Even the orientation of the grain was the same to avoid any impact of vertical vs horizontal grain lines. The plain maple had one layer of 300gsm 12k unidirectional carbon fibre between each piece, the flame maple had two per lamination, which may be why it sees a smaller gain afterwards? Lots m…

epoxyfiberglasscomposite necks
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Thanks for this! I worked with FRPs, carbon fiber, etc. for years as a shipwright and never came across colored product like the Hypetex you mentioned. Very cool! Hypetex makes flax-based and carbon f…