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New Luthier Tips du Jour video - UV curable pore filler
http://mowrystrings.luthiersforum.com/forum/viewtopic.php?f=10101&t=49442
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Author:  Robbie O'Brien [ Mon Jun 05, 2017 8:03 am ]
Post subject:  New Luthier Tips du Jour video - UV curable pore filler

Here is the latest Luthier Tips du Jour video - In this video I show how to use a UV curable pore filler.
This video as well as all my other videos are available via my website, http://www.obrienguitars.com/videos , LMI's website or on youtube.

Author:  Michaeldc [ Mon Jun 05, 2017 9:00 am ]
Post subject:  Re: New Luthier Tips du Jour video - UV curable pore filler

Robbie,

I've got to give the wipe-on technique a try!

I've tried using the technique you demonstrated in your uv curable video of a couple of years ago, and found the sanding to be a deal breaker. I find it much harder to sand than the Silvertip epoxy I'm used to using. I've also been told that there is a minimum film thickness required for most of the uv gel pore fillers out there so haven't experimented with wiping the surface clean. Hopefully the Simtec gel works like the Cardinal product as that's what I have on hand... I'm assuming that you are still using an adhesion promoter prior to the gel filler?

Thanks for the videos!

Cheers, Michael

Author:  ernie [ Mon Jun 05, 2017 9:18 am ]
Post subject:  Re: New Luthier Tips du Jour video - UV curable pore filler

Michael , could you elaborate how you are using silvertip epoxy as apore filler , I just used a system 3 epoxy on sat. with the #2 hardener to fill a w. oak back I used white silica thickener and mixed it in seems to work OK the oak has big pores . I sanded it back after 24 hrs with 220 grit, Is the silvertip the one . J greven recommends on his toot in the GAL ?? Thanks ernie

Author:  Michaeldc [ Mon Jun 05, 2017 9:42 am ]
Post subject:  Re: New Luthier Tips du Jour video - UV curable pore filler

ernie wrote:
Michael , could you elaborate how you are using silvertip epoxy as apore filler , I just used a system 3 epoxy on sat. with the #2 hardener to fill a w. oak back I used white silica thickener and mixed it in seems to work OK the oak has big pores . I sanded it back after 24 hrs with 220 grit, Is the silvertip the one . J greven recommends on his toot in the GAL ?? Thanks ernie


Hi Ernie,

I learned about Silvertip from my friend Jay Lichty. He did a video on the use of waterbase finishes, and Silvertip is what he likes. I've used Z-poxy, and SB-112, etc and like the Silvertip the best. I'm using the fast hardener and applying with a foam brush, letting the first coat kick overnight. I then apply a second coat and let that one kick overnight (no need to sand between coats if applied within a 72hr window). I then sand it out with my festool sander using 320, and final level with a hard block using 320 3M gold stik-it paper. I then wipe it down with naptha and away we go...

Author:  ernie [ Mon Jun 05, 2017 4:15 pm ]
Post subject:  Re: New Luthier Tips du Jour video - UV curable pore filler

Thank you michael. I will check out jay/s video, I/ve only used epoxy 2 x, I started with oil base filler in the 80/s moved up to waterbase 15 yrs ago and now I/d like to try epoxy. Each method has it/s pluses/minuses

Author:  Robbie O'Brien [ Mon Jun 05, 2017 5:04 pm ]
Post subject:  Re: New Luthier Tips du Jour video - UV curable pore filler

Michaeldc wrote:
Robbie,

I've got to give the wipe-on technique a try!

I've tried using the technique you demonstrated in your uv curable video of a couple of years ago, and found the sanding to be a deal breaker. I find it much harder to sand than the Silvertip epoxy I'm used to using. I've also been told that there is a minimum film thickness required for most of the uv gel pore fillers out there so haven't experimented with wiping the surface clean. Hopefully the Simtec gel works like the Cardinal product as that's what I have on hand... I'm assuming that you are still using an adhesion promoter prior to the gel filler?

Thanks for the videos!

Cheers, Michael


Keep it thin so little sanding is required. Yes, I use an adhesion promoter before and after applying the pore fill.

Author:  rlrhett [ Mon Jun 05, 2017 10:26 pm ]
Post subject:  Re: New Luthier Tips du Jour video - UV curable pore filler

Robbie, what is that lamp you are waiving? Did you do a luthier's tip on that setup?

(I'll probably never go that route, but I love seeing all the different techniques.)

Author:  Robbie O'Brien [ Tue Jun 06, 2017 8:48 am ]
Post subject:  Re: New Luthier Tips du Jour video - UV curable pore filler

rlrhett wrote:
Robbie, what is that lamp you are waiving? Did you do a luthier's tip on that setup?

(I'll probably never go that route, but I love seeing all the different techniques.)


I am using the Cure Buddy from UV III systems. I did a video years ago on UV systems.


Here is another one I did on UV finishes

Author:  nkforster [ Tue Jun 06, 2017 11:38 am ]
Post subject:  Re: New Luthier Tips du Jour video - UV curable pore filler

Robbie, this looks great. Might a simple UV box work also for curing - not so fast I'm sure, but a lot cheaper to experiment with - an aluminium foil lined ply box with a few UV strip lamps in? Then I wouldn't need to buy the protective gear as well as the wand. Any thoughts?

Nigel
http://www.theluthierblog.com

Author:  Robbie O'Brien [ Tue Jun 06, 2017 4:57 pm ]
Post subject:  Re: New Luthier Tips du Jour video - UV curable pore filler

nkforster wrote:
Robbie, this looks great. Might a simple UV box work also for curing - not so fast I'm sure, but a lot cheaper to experiment with - an aluminium foil lined ply box with a few UV strip lamps in? Then I wouldn't need to buy the protective gear as well as the wand. Any thoughts?

Nigel
http://www.theluthierblog.com



Unfortunately Nigel I have no experience with this. In theory I guess it could work but I would have no idea about how to do this.

Author:  Jim Watts [ Tue Jun 06, 2017 7:41 pm ]
Post subject:  Re: New Luthier Tips du Jour video - UV curable pore filler

Has anybody considered or tried the solarez uv cured sun light activated pore filler?

Author:  luthierPS [ Sun Jun 11, 2017 1:59 pm ]
Post subject:  Re: New Luthier Tips du Jour video - UV curable pore filler

Robbie O'Brien wrote:
Michaeldc wrote:
Robbie,

I've got to give the wipe-on technique a try!

I've tried using the technique you demonstrated in your uv curable video of a couple of years ago, and found the sanding to be a deal breaker. I find it much harder to sand than the Silvertip epoxy I'm used to using. I've also been told that there is a minimum film thickness required for most of the uv gel pore fillers out there so haven't experimented with wiping the surface clean. Hopefully the Simtec gel works like the Cardinal product as that's what I have on hand... I'm assuming that you are still using an adhesion promoter prior to the gel filler?

Thanks for the videos!

Cheers, Michael


Keep it thin so little sanding is required. Yes, I use an adhesion promoter before and after applying the pore fill.

Hi Robbie
Could you please tell me which adhesion promoter do you use?
Thanks


Sent from my iPhone using Tapatalk

Author:  Robbie O'Brien [ Sun Jun 11, 2017 5:29 pm ]
Post subject:  Re: New Luthier Tips du Jour video - UV curable pore filler

luthierPS wrote:
Robbie O'Brien wrote:
Michaeldc wrote:
Robbie,

I've got to give the wipe-on technique a try!

I've tried using the technique you demonstrated in your uv curable video of a couple of years ago, and found the sanding to be a deal breaker. I find it much harder to sand than the Silvertip epoxy I'm used to using. I've also been told that there is a minimum film thickness required for most of the uv gel pore fillers out there so haven't experimented with wiping the surface clean. Hopefully the Simtec gel works like the Cardinal product as that's what I have on hand... I'm assuming that you are still using an adhesion promoter prior to the gel filler?

Thanks for the videos!

Cheers, Michael


Keep it thin so little sanding is required. Yes, I use an adhesion promoter before and after applying the pore fill.

Hi Robbie
Could you please tell me which adhesion promoter do you use?
Thanks


Sent from my iPhone using Tapatalk


It depends on which brand I am using. Both Simtec and Cardinal have their recommended sealer/adhesion promoter. I like the Cardinal brand and theirs is a catalyzed version.

Author:  Jonny [ Sun Jun 18, 2017 1:42 pm ]
Post subject:  Re: New Luthier Tips du Jour video - UV curable pore filler

Jim Watts wrote:
Has anybody considered or tried the solarez uv cured sun light activated pore filler?


I have also been wondering about this stuff .
Anyone on here try it?

Author:  luthierPS [ Mon Jun 19, 2017 2:46 am ]
Post subject:  Re: New Luthier Tips du Jour video - UV curable pore filler

Thanks Robbie


Sent from my iPhone using Tapatalk

Author:  jfmckenna [ Mon Jun 19, 2017 9:26 am ]
Post subject:  Re: New Luthier Tips du Jour video - UV curable pore filler

That's cool. I had no idea how fast that stuff dried, simply wave the wand and you are done. I could see that being very desirable in a big shop.

Author:  Pat Hawley [ Mon Jun 26, 2017 5:00 pm ]
Post subject:  Re: New Luthier Tips du Jour video - UV curable pore filler

Robbie,

In one of your videos you mentioned that Simtec had a product that acted as both a sealer/adhesion promoter and pore filler. It looked like a gel that you cured with the uv light and you said you liked it since it saved a step. How did that work out for you? I am wondering because I am using the stuff from cureuv.com and have found it essential to get the guitar well sealed (especially end grain) with the sealer before anything that needs to be cured with the light goes on. If I don't, then some of it will go deep into the pores, beyond the reach of the light and I can never get it cured.

Thanks,
Pat

Author:  Robbie O'Brien [ Mon Jun 26, 2017 6:36 pm ]
Post subject:  Re: New Luthier Tips du Jour video - UV curable pore filler

Pat Hawley wrote:
Robbie,

In one of your videos you mentioned that Simtec had a product that acted as both a sealer/adhesion promoter and pore filler. It looked like a gel that you cured with the uv light and you said you liked it since it saved a step. How did that work out for you? I am wondering because I am using the stuff from cureuv.com and have found it essential to get the guitar well sealed (especially end grain) with the sealer before anything that needs to be cured with the light goes on. If I don't, then some of it will go deep into the pores, beyond the reach of the light and I can never get it cured.

Thanks,
Pat


That was a custom mix product mixed up for me. I do not believe it is actually for sale. It worked well in testing but not on cocobolo.

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