Jayhovah's fiberglass sub box build log

axmea? · 01-07-2018, 01:40 AM

You're right about the hassle of working with fiberglass.
Have fun sanding

Jayhovah · 01-07-2018, 02:12 PM

Got it sanded.. took about an hour and a half. 60 grit paper knocks the filler down pretty fast and I was able to get most of it with a block.

Test fitted it after sanding and cleaning... Looking great.

Started cleaning up some of the bigger voids with some glazing putty... the dimple wasn't filled completely so I tried filling it with the putty. That part really is a job for another coat of filler but I am out of it and don't feel like going out to get more unless I absolutely need it. Most likely, if it drys through properly I will have to put on one more coat of it to get it completely level.

I also decided to glaze the portion that sits against the "bar" as you will be able to see it through that little void.

Hopefully will be able to sand, glaze, and sand one more time and be ready to cover. I also still need to test the seal.

There is a light at the end of the tunnel!

RonRizz · 01-07-2018, 03:50 PM

looking good thus far.

BoneZ · 01-07-2018, 03:53 PM

Quote:

Originally Posted by Jayhovah

There is a light at the end of the tunnel!

Awesome... just so long as it's not a train.

redondoaveb · 01-07-2018, 04:53 PM

Quote:

Originally Posted by Jayhovah

Got it sanded.. took about an hour and a half. 60 grit paper knocks the filler down pretty fast and I was able to get most of it with a block.

Test fitted it after sanding and cleaning... Looking great.

Started cleaning up some of the bigger voids with some glazing putty... the dimple wasn't filled completely so I tried filling it with the putty. That part really is a job for another coat of filler but I am out of it and don't feel like going out to get more unless I absolutely need it. Most likely, if it drys through properly I will have to put on one more coat of it to get it completely level.

I also decided to glaze the portion that sits against the "bar" as you will be able to see it through that little void.

Hopefully will be able to sand, glaze, and sand one more time and be ready to cover. I also still need to test the seal.

There is a light at the end of the tunnel!

Very nice! You didn't cancel my order did you?

Jayhovah · 01-07-2018, 05:27 PM

Quote:

Originally Posted by RonRizz

looking good thus far.

Thanks!!

Quote:

Originally Posted by BoneZ

Awesome... just so long as it's not a train.

No joke! It felt that way when I was about to test fit it... I've had boxes warp on me as I finished them outside the car and you're all excited its taking shape then find out it doesn't fit anymore.

Quote:

Originally Posted by redondoaveb

Very nice! You didn't cancel my order did you?

I did, unfortunately. Still waiting on that 165% restocking fee

Jayhovah · 01-07-2018, 05:35 PM

Sanded the putty, marked the blemishes, and reapplied.

In the dip the putty was still a little soft so I'll let it dry for about 24 hours and give it another quick sanding after work tomorrow. I love how easily the putty sands.

redondoaveb · 01-07-2018, 05:51 PM

Quote:

Originally Posted by Jayhovah

Thanks!!

No joke! It felt that way when I was about to test fit it... I've had boxes warp on me as I finished them outside the car and you're all excited its taking shape then find out it doesn't fit anymore.

I did, unfortunately. Still waiting on that 165% restocking fee

Where do I send the $1.65?

370Chicago · 01-07-2018, 09:28 PM

Looks great, can't wait to see the finished product. I might have missed this, but how do you plan to anchor it?

Jayhovah · 01-07-2018, 09:49 PM

BoneZ!!!!!!! The tip about the milkshake is going to be key. I installed the sub, sprayed soapy water all over the enclosure, pressed on the cone and BAM! Imperceptibly tiny pin holes like EVERYWHERE. Will definitely be picking up some extra body filler and resin tomorrow. Can't imagine how this might have affected previous enclosures... though previous enclosures included a lot more layers as they were much much larger.

Quote:

Originally Posted by 370Chicago

Looks great, can't wait to see the finished product. I might have missed this, but how do you plan to anchor it?

I have no idea. I am going to wrap the sides with some foam and hope it fits in tightly enough to stay put.

If I anchor it to a panel I'll need to mod the trunk mats to ensure I can access the spare tire.

BoneZ · 01-07-2018, 09:55 PM

Quote:

Originally Posted by Jayhovah

BoneZ!!!!!!! The tip about the milkshake is going to be key. I installed the sub, sprayed soapy water all over the enclosure, pressed on the cone and BAM! Imperceptibly tiny pin holes like EVERYWHERE. Will definitely be picking up some extra body filler and resin tomorrow. Can't imagine how this might have affected previous enclosures... though previous enclosures included a lot more layers as they were much much larger.

I have no idea. I am going to wrap the sides with some foam and hope it fits in tightly enough to stay put.

If I anchor it to a panel I'll need to mod the trunk mats to ensure I can access the spare tire.

Awesome. In my experience, I had to use less hardener than I expected. I used the liquid from the resin, not the paste from the Bondo. My first shake turned into a bowling ball before I could get it into the enclosure. Need to keep it flowing for a bit to soak into all the crannies.

Jayhovah · 01-07-2018, 10:04 PM

Quote:

Originally Posted by BoneZ

Awesome. In my experience, I had to use less hardener than I expected. I used the liquid from the resin, not the paste from the Bondo. My first shake turned into a bowling ball before I could get it into the enclosure. Need to keep it flowing for a bit to soak into all the crannies.

Thanks! Did you mix 50/50? What consistency did you go for? Runny at all? Or just tilt the box and watch it slowly slide around?

I've also thinned body filler down with acetone in the past and it works GREAT. I could probably get it much thinner than I could with resin but I may go with the resin just for the added stiffness.

BoneZ · 01-07-2018, 10:07 PM

Quote:

Originally Posted by Jayhovah

Thanks! Did you mix 50/50? What consistency did you go for? Runny at all? Or just tilt the box and watch it slowly slide around?

I've also thinned body filler down with acetone in the past and it works GREAT. I could probably get it much thinner than I could with resin but I may go with the resin just for the added stiffness.

I just added Bondo to the resin until it created a thick yet decent flowing consistency. Definitely thin enough to flow around the Box when tilted.

redondoaveb · 01-07-2018, 10:16 PM

Question from the audio challenged. I know you're fabricating a sealed enclosure but is it critical to seal the pin holes?

Jayhovah · 01-07-2018, 10:30 PM

Quote:

Originally Posted by redondoaveb

Question from the audio challenged. I know you're fabricating a sealed enclosure but is it critical to seal the pin holes?

For sure!! I have seen cones tear from the resistance of having to push/pull air through the pin holes. Even if it isn't that catastrophic, it's going to distort the sound.

01-07-2018, 01:40 AM	#46 (permalink)
axmea? A True Z Fanatic Join Date: Apr 2012 Location: SoCal Posts: 6,236 Drives: WELL ZED PW 6MT Rep Power: 53241	You're right about the hassle of working with fiberglass. Have fun sanding Jayhovah likes this. __________________ >MyZ's Album< NISMO Convert/ECUTEK/Takeda CAI/F.I. HFC NR CB Carbon/F.I. 34 Row Oil Cooler/4.08 Final Drive /Powertrix+Swifts/Hotchkis/SPL/Whiteline/TWM/Zoom Engineering/EVO-R/AeroJacket Vented CF Fenders + CF Spoiler/Avant Garde-WORK/NST/Morimoto Halo/STi Clear Lenses/Carbon Signal Automotive/RJM Performance/ZSpeed Clutch Flywheel CSC delete

01-07-2018, 03:50 PM	#48 (permalink)
RonRizz A True Z Fanatic Join Date: Aug 2011 Location: Pine grove, Pa Posts: 2,136 Drives: 2 feet, 3 pedals Rep Power: 6775	looking good thus far. Jayhovah likes this. __________________ P99rs Head Unit--- Amps- 2 Pioneer Prs800d --- Zapco ST1000MX---Zapco ST-4XSQ---- SI BM mk5 Subs---SI TM65v2 Midbass--- SI M3 mids--- SI M25 xbl2 tweeters ----- 2016 MECA street class 3rd place at world finals

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Jayhovah's Gamma V3 TT Install Pic/Video Dump	Jayhovah	Forced Induction	25	05-14-2017 09:37 AM
Jayhovah's Build Journal	Jayhovah	Member's 370Z Gallery	13	10-30-2014 02:42 PM
Custom Fiberglass Sub Box	CSA0890	Audio & Video	0	11-26-2012 11:06 PM
fiberglass box	im89	Audio & Video	7	02-04-2011 04:57 PM

01-07-2018, 09:28 PM	#54 (permalink)
370Chicago Base Member Join Date: Feb 2016 Location: Chicago Posts: 56 Drives: '15 370Z Nismo 6MT Rep Power: 9	Looks great, can't wait to see the finished product. I might have missed this, but how do you plan to anchor it?

01-07-2018, 10:16 PM	#59 (permalink)
redondoaveb A True Z Fanatic Join Date: Apr 2017 Location: So. Commiefornia Posts: 6,366 Drives: 2014 Nismo Gunmetal Rep Power: 2684374	Question from the audio challenged. I know you're fabricating a sealed enclosure but is it critical to seal the pin holes?