Christmas 2021 was spent isolated at home due to Covid. Time was available in quantities never experienced before. A perfect time to search the internet for a way to replace the boom head on my old Simmer Blackline 160-220 cm from 2011 since it poorly fitted my North SDM 430 mast.
The modular boom head from Unifiber looked promising and now just over a year later I have used it for 10 times, and I can really recommend others to give their carbon booms a upgrade like this.
![](http://bfcsurf.se/upload/2023/02/image-12-1024x510.png)
Bill of materials
- Custom 3D printed shim (black) – Shim to glue on the round (32-33 mm) boom front end to make it D-shaped.
![](http://bfcsurf.se/upload/2023/02/image-6.png)
![](http://bfcsurf.se/upload/2023/02/image-13.png)
![](http://bfcsurf.se/upload/2023/02/image-7.png)
- A Unifiber Shim – Unifiber Elite(=orange) Modular Boom Head Carbon Shim (25 Euro)
![](http://bfcsurf.se/upload/2023/02/image-5.png)
- Unifiber Boom Head – Unifiber (Elite=orange or HD=blue including the performance bolts) Modular RDM & SDM Compatible Boom Head (79-85 Euro)
![](http://bfcsurf.se/upload/2023/02/image-11.png)
![](http://bfcsurf.se/upload/2023/02/image-10.png)
- Epoxy Glue
- Tiny Stainless screws (to fix Unifiber shim to 3D-printed shim)
- Acetone
How to assemble
![](http://bfcsurf.se/upload/2023/02/image-1.png)
Remove old boom head
![](http://bfcsurf.se/upload/2023/02/image.png)
- Remove grip with a knife to widen the tubes to 130mm. Sand edges used to center old boom head
![](http://bfcsurf.se/upload/2023/02/image-14.png)
- Heat 3D-printed shim to ease mounting
![](http://bfcsurf.se/upload/2023/02/image-15.png)
- Test fit by mounting:
3D-printed shim with gap facing front and the flat part facing rear
Orange shim with gap facing rear
![](http://bfcsurf.se/upload/2023/02/image-16.png)
![](http://bfcsurf.se/upload/2023/02/image-17.png)
- Make more sanding until you’re happy with the fit
- Clean front pipe with Acetone
Mix Glue
![](http://bfcsurf.se/upload/2023/02/image-18.png)
- Apply glue on pipe and shim
![](http://bfcsurf.se/upload/2023/02/image-19.png)
- Heat 3D printetd shim again and make final mounting with glue
![](http://bfcsurf.se/upload/2023/02/image-20.png)
- Mount orange shim and boom head. Mount performance bolt to get pressure on the glued shim
![](http://bfcsurf.se/upload/2023/02/image-21.png)
- Wait for 24h to make glue harden properly
- Dismount performance bolts and boom head
- Drill 2mm holes through shims and mount stainless screws to restrain rotation. It is only the boom head that should rotate.
![](http://bfcsurf.se/upload/2023/02/image-22.png)
- Mount back boom head and performance bolts
![](http://bfcsurf.se/upload/2023/02/image-23.png)
![](http://bfcsurf.se/upload/2023/02/image-21.png)
Links to Unifiber retailers
Easy Surf
https://easy-surfshop.com/do/item/UF012010325/UNIFIBER-Elite-Modular-Boom-Head-Carbon-Shim–2-Bu
Surfspot
https://www.surfspot.se/sv/unifiber-elite-modular-boom-head-carbon-shim-2-bumpers
https://www.surfspot.se/sv/unifiber-modular-boom-head-performance-bolts-2-pcs
https://www.surfspot.se/sv/unifiber-elite-modular-rdm-sdm-compatible-boom-head
Hej! Skulle man kunna få filen för att printa en egen custom shim?
vh
John
Jag har inte filen utan köpte det. Det är printat av en kille i Nederländerna.
Ok! Har han en hemsida eller mailadress?
Mejla till klubben bfcsurfsup@gmail.com så svarar jag dig personligen