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DING REPAIR QUESTIONS

1. How do I fix this small ding on the bottom of my board? (Picture attached)

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2. My Firewire board has a deck crack as if it was bent in half (buckled). 1) Is it worth it to repair (i.e. will it crack again?). 2) What materials do I need to repair a board in this condition?

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3. I am working on epoxy and carbon boards. I need a clear resin that won't yellow. I bought some other resin from a supplier and it turned yellow over time. What do you recommend? Also need a good filler material to use.

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4. Does Greenlight do ding repairs?

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5. Do you guys sell Divinycell? If you can recommend some other type of material that would be light, stronger than foam (PU or EPS), and can be routed.

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6. Can I fix a ding with epoxy resin on a poly board?

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7. Can I use suncure and no q-cell to fix a small ding?

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8. What materials do I need to fix and old board? Used to do some auto-body work and wonder if I can repair the dents/dings, sand overall, then spray with auto paint and finish off with a new hotcoat

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9. Just looking at your epoxy ding repair kits. I have a few repairs I want to do and feel like I would need a bit more than 6 oz. Do you have any recommendations on epoxy resins I could use?

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10. Glass is cracked around fin plug. Can I just line up my jig, slowly route out this box and replace it or will I destroy router bit?

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11. I buckled my kiteboard. Can I fix it?

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12. With a buckle like this would you ever route a couple channels length-wise parallel to the board and insert some wood stringers in to try and bridge the buckle? Or will the filler and glass do the trick?

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13. I have a poly foam board with a small ding in it that I want to repair. I have q-Cell, fiberglass clothe and spreading tools...do I need to buy catalyst?? This ding is so small that I was considering using sun-cure, is that a good idea??

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14. Can I use epoxy resin on a poly board for ding reapair?

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15. Do I have to mix up the resin, hardener & q-cell mixture for a ding repair?

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16. Do I need to cut out the existing broken fiberglass in a dinged board before repairing?

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17. Did you offer a surfboard repair course?

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18. I take it the UV resin is sanding resin. Is the Q-cell additive easy sanding by hand? Do I need a finish or gloss resin? If I'm doing a rail repair that is glassed does both surfaces does both surfaces need to be exposed to the sun?

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1. How do I fix this small ding on the bottom of my board? (Picture attached)

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We sell a poly ding repair kit that includes everything you need to take care of any dings you get over time.


1. Pull out any broken fiberglass in the ding


2. Scratch up the area about 1" around the ding with sandpaper


3. Mix resin and Q-cell to a peanut butter consistency and fill the hole. For a shallow ding like that you don't need to catalyze the q-cell mix. The UV rays will get in there..


4. Sand the Q-cell / resin flush with the board


5. Put a small patch of fiberglass over the area about 1" bigger than the ding on all sides and laminate with resin and a squeegee


 6. When cured lightly sand the edges of the fiberglass down so there is no hard edges. 


7. Brush or squeegee more resin over the ding repair to seal it. You can leave it shiny or sand it if you want.


2. My Firewire board has a deck crack as if it was bent in half (buckled). 1) Is it worth it to repair (i.e. will it crack again?). 2) What materials do I need to repair a board in this condition?

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It's buckled. Won't surf the same again. But if you want to fix it get 48 oz Resin Research Epoxy and a yard of 4 oz fiberglass

Mix the resin with Q-cell to a peanut butter consistency to fill the void the buckle created. Strip about a foot of glass from the area and re-glass.

3. I am working on epoxy and carbon boards. I need a clear resin that won't yellow. I bought some other resin from a supplier and it turned yellow over time. What do you recommend? Also need a good filler material to use.

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The best product for your SUP repairs is Resin Research 2000 ULTRA Epoxy. It has UV inhibitors mixed in to prevent yellowing from the sun. 
We recommend the 2000 with Fast hardener but we also sell slow hardener if you prefer. As long as you don't leave a lot of resin sitting in the mixing bucket it will not heat up (called exotherm).
Best to mix the resin and put it on the board, plenty of working time to get the job done with a nice, strong, clear repair. Resin Research is all we use for building and fixing surfboards here at the shop.

You want to add Q-cell to the epoxy mix as a filler. It's strong and sands smooth. Q-cell is the Industry standard repair filler.

You can order the resin research and q-cell online and we'll ship it to you immediately.

4. Does Greenlight do ding repairs?

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Sorry, we do not do ding repairs.

5. Do you guys sell Divinycell? If you can recommend some other type of material that would be light, stronger than foam (PU or EPS), and can be routed.

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Sorry we do not sell divinycel. Best we can do is 2# density EPS which is twice as dense and string as the .75-1.0 lbf density in your paddeboard (we used to repair Dolphin, Bennet, and Krackin prones every summer).

6. Can I fix a ding with epoxy resin on a poly board?

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Yes. You can use epoxy on anything. Scratch up the surface well with 60 or 80 grit for a good bond to the existing fiberglass. 


Note: You cannot use Polyester resin on an EPS (epoxy) board.

7. Can I use suncure and no q-cell to fix a small ding?

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Yes you can just use Suncure on a small ding. Q-cell is for filling deep holes and then fiberglass over it... 


Q-cell mixed in resin requires catalyst since the sun's UV rays will not penetrate and cure the resin. But you can just use the sun cure on surface cracks and small dings.


Note: Use Suncure and polyester resins with polyester boards only! Do not use on EPS (epoxy) boards


8. What materials do I need to fix and old board? Used to do some auto-body work and wonder if I can repair the dents/dings, sand overall, then spray with auto paint and finish off with a new hotcoat

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 Yes you can absolutely refurbish an old surfboard. Lots of guys do it. The process is exactly how you describe. 


You'll need 4 oz fiberglasspolyester resinMEKP catalystSurfacing Wax, and Q-cell to repair the dings. 


There are plenty of videos on YouTube showing the ding repair process 

9. Just looking at your epoxy ding repair kits. I have a few repairs I want to do and feel like I would need a bit more than 6 oz. Do you have any recommendations on epoxy resins I could use?

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 If you need more than 6 oz of resin for ding repairs you can either get an epoxy ding repair kit and a 6 oz kit of Resin Research Quik Kick for 12 oz total. 


Another option is 48 oz Resin Research Quik Kick, a yard of 4 oz fiberglass, and a 32 oz tub of Q-cell powder.

10. Glass is cracked around fin plug. Can I just line up my jig, slowly route out this box and replace it or will I destroy router bit?

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You can certainly route the box out. The plastic is soft and will not kill the router bit. Make sure to remove the screws first!


But we prefer to dremmel the glass around the box flange and just pull it out... less stress than routing.


Install a fin in the box, rock it back and forth, and pull it out.


You can install a new finbox in the same hole without re-routing. 


11. I buckled my kiteboard. Can I fix it?

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I have searched your website and love it!  I recently buckled a slingshot kiteboard (2014 Trex).  I have attached some pics showing the buckle.  I am looking to get into board shaping and repair and I figure this would be a fun project to get my feet wet.  What would you suggest for fixing this board?  I am not super concerned about weight because I will most likely use the board with straps only as opposed to the punting strapless board that it once was (hence how it was buckled).  I am thinking about using some Q cell to fill the break and then glass it with some carbon fiber.  What do you think?  Thanks for the info and help!


You can definitely fix that board and keep it alive.


Yep, sand the area with 80 grit first for a good resin bond and then fill with Q-cell and epoxy mix. 


You can use carbon but regular 4 oz fiberglass will work fine too. I'd make the glass patch about 12" wide to strengthen the buckle area and wrap around the rails to the deck.


12. With a buckle like this would you ever route a couple channels length-wise parallel to the board and insert some wood stringers in to try and bridge the buckle? Or will the filler and glass do the trick?

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It is not necessary to install new stringers for a buckle but you certainly can if you want. It depends on the damage to the stringer. Here at the shop, when boards are snapped in half we install new support stringers but not with buckles. A nice wide piece of glass will do the trick.

13. I have a poly foam board with a small ding in it that I want to repair. I have q-Cell, fiberglass clothe and spreading tools...do I need to buy catalyst?? This ding is so small that I was considering using sun-cure, is that a good idea??

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Yes you can just use Suncure on a small ding. Q-cell is for filling deep holes and then fiberglass over it... 


Q-cell mixed in resin requires catalyst since the sun's UV rays will not penetrate and cure the resin. But you can just use the sun cure on surface cracks and small dings.


14. Can I use epoxy resin on a poly board for ding reapair?

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Yes. You can use epoxy on anything. Scratch up the surface well with 60 or 80 grit for a good bond to the existing fiberglass. 

Note: You cannot use Polyester resin on an EPS (epoxy) board.

15. Do I have to mix up the resin, hardener & q-cell mixture for a ding repair?

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Mix the UV resin and Q-cell to a "whipped cream" consistency and pour it in the hole. Let cure in the sun.


Sand the Q-cell down flush with the board.


Lay a piece of fiberglass over the ding about 1" larger than the ding for bonding to the fiberglass. 


Pour UV resin on the fiberglass and squeegee around.


Lightly sand the edges of the fiberglass to fair into the board so there is no "lip" of glass


Brush more UV resin over the fiberglass patch and cure. Lightly sand the resin to smooth it out.

16. Do I need to cut out the existing broken fiberglass in a dinged board before repairing?

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Yes, cut out the fiberglass in the hole and scratch up the surrounding fiberglass area with 60 or 80 grit sandpaper. 

17. Did you offer a surfboard repair course?

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Sorry my friend. We do not offer a class like that.

18. I take it the UV resin is sanding resin. Is the Q-cell additive easy sanding by hand? Do I need a finish or gloss resin? If I'm doing a rail repair that is glassed does both surfaces does both surfaces need to be exposed to the sun?

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The UV cure resin is a laminating resin but can be sanded. It is recommended to add Surfacing Wax for a shiney and easily sandable finish. 

Also if filling a deep ding with Q-cell powder, mix MEKP catalyst in with the resin for full cure as the sun's UV rays may not penetrate all the way through. 

For UV resin to cure it must be exposed to the sun's UV rays. UV rays bounce off the ground (concrete is best) but will cure faster if exposed to full sun.

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