How to Fix Soft Hulls - Hobie 16 Repair

Today, we are starting to repair the delaminations on my 1979 Hobie 16 by epoxy injection. We are using West System 105 with 209 hardener and 403 microfibers.
Tips for successful repairs:
-Do not drill through both laminates
-Drill clearance hole, so the laminate is not pushed apart
-Thicken epoxy to better fill the void (thick syrup to honey)
-Use sheet metal screws and coat with PVA
-Self tapping screws are helpful to drill through the laminate
The next episode will be a progress video of the delams showing the magnitude of repairs (spoiler one was over 10 feet long).
Materials Needed:
-Non-permanent Marker
-Ruler
-Drill
-Drill bit for clearance hole (5/32" is clearance for #6 screws)
-Stainless Screws (I used #6 x 1" self tapping sheet metal screws)
-PVA (used to release fasteners; water soluble so we can clean and reuse fasteners)
-West System 105-A Epoxy (I used a quart and a gallon total)
-West System 209-SA Hardener
-West System 403 Microfibers
-West System Minipump Set
-Mixing supplies (cup and tongue depressor)
-Syringe (I used 20 ml Luer no needle; at least 1 per repair)
-Sandpaper 80 grit
-IPA (Isopropyl Alcohol)
Let me know in the comments what you like or dislike about this episode in the comments. I do not want the videos too long, but I also want to show the entire process. These repairs and upgrades take time and effort, and I want to communicate the hardships that come along with it.
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Disclaimer:
The views expressed in this and any other video are mine and mine alone and do not represent any employer past or present.

[@tridactik]

There is a Bill of Materials (BOM) in the video description.

[@LlamaOates]

Thanks for taking the time to setup the camera and show us what you are are doing.

[@gillesgardy8957]

Hi. Thank you so much for this video. Probably due to my poor English I don't understand what (little piece of metal) and why you put it into each hole. What is the goal of that ?

[@ecard0]

Great video. I’m getting ready to do the same on my H16. How did coat/prep your screws with PVA ? Sprayed or dipped the screws in PVA ? Thanks in advance

[@Chloe_Athey]

To fix the holes you put into the hull, couldn't you use something like Marine Putty as a plug and then put epoxy over it for better support?

[@JosephMullin]

use tape on the bill as a stop for depth

[@MrJgem12345]

Do you pre-drill a pilot hole for the fasteners or do you let the pointy tip of the sheet metal screws do the work of penetrating the inner hull and pulling it all together?

[@jackiegregory779]

Hi! Can you show me how to re-glue my inflatable i12 kayaks?

[@dougr2237]

I tried using the screw’s you used but it doesn’t feel like they are pulling the layers together. Any suggestions?

[@valentin.garcia]

Thanks for the video! Do you have any tips to repair cracks and used bottom hull (I can see light through the hull)

[@nacra613]

Thanks for the vid. Re using epoxy, why not use fglass resin so the bond is like with like? Given the scale of your job, is epoxy heavier? thx

[@garygross3375]

Why not just fill it with foam? Wouldn't that work?

[@Chloe_Athey]

Doesn't adding the fasteners just make the repair even worse by making holes go through both layers of laminate? Also instead of pot filling couldn't you just sand down and add a layer of fiberglass mesh instead adding strength to your repair as well as finish up the holes you made?