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re: 35’6” Razorhead Cat Build
Posted on 12/16/21 at 8:39 am to avid lurker
Posted on 12/16/21 at 8:39 am to avid lurker
Note: don’t sweat on your fiberglass during lamination….
Have a couple blister of fairing where I know I watched a sweat bead fall. Guess I’ll have to start wearing a head band.
This is a good eye opener and Experience for the stuff I’m going to run into when I go to build a poling skiff
Have a couple blister of fairing where I know I watched a sweat bead fall. Guess I’ll have to start wearing a head band.
This is a good eye opener and Experience for the stuff I’m going to run into when I go to build a poling skiff
This post was edited on 12/16/21 at 8:40 am
1
Posted on 12/16/21 at 9:55 am to Timmayy
Its been a really long time since I watched or helped with any glass work, but I seem to remember wiping everything down really good with acetone between every step.
Posted on 12/16/21 at 10:28 am to bbvdd
Yeaah so I’m using laminating polyester resin and everything so far has been laid up after it’s kicked but before its cured. The fairing compound I put wax in so that it would fully cure and I could sand.
Between cured coats or laminating coats that don’t have wax that have sat for longer than 24hrs I wipe with acetone and give a quick scuff with sandpaper
Between cured coats or laminating coats that don’t have wax that have sat for longer than 24hrs I wipe with acetone and give a quick scuff with sandpaper
Posted on 12/17/21 at 11:50 am to Timmayy
Another WTF am I doing moment brought to you by brushing gelcoat on.
So after wasting about 10 sanding pads from the gummed up fairing compound I went for round two of fairing. This time I didn’t about a quarter of the size batches and tried to tame my ocd desire to keep trowling it until it was perfect.
This morning I woke up to find that it all cured perfectl and I went after sanding. The inside bottom corners are an absolute pain in the arse.. even with the finger file I still struggled.
I found that I would sand for about 20 mins and think that I was good and done until a blew it out and would see everything that was left… after about five of those I got to a point that I thought the tooling gelcoat would fill. Idk to be determined if that was the wrong move.
Brushing the gelcoat in my initial thoughts are am I ever going to get these brush strokes out. Like I said paint and gelcoat work is where I always fail.
My hopes is that because this is a mold and the forthcoming pieces won’t be really put under much stress I can get away with doing a few rounds of gelcoat and sanding to make up for my lacking application technique. I did realize just not that out of the habit with the fairing I put surfacing wax on this first coat of gelcoat whereas I should have just left it without and brushed the next one or two coats on without sanding.
Owell guess that means I’m done for the day.
Raining tom so probably too much humidity to do much other than sanding anyway
So after wasting about 10 sanding pads from the gummed up fairing compound I went for round two of fairing. This time I didn’t about a quarter of the size batches and tried to tame my ocd desire to keep trowling it until it was perfect.
This morning I woke up to find that it all cured perfectl and I went after sanding. The inside bottom corners are an absolute pain in the arse.. even with the finger file I still struggled.
I found that I would sand for about 20 mins and think that I was good and done until a blew it out and would see everything that was left… after about five of those I got to a point that I thought the tooling gelcoat would fill. Idk to be determined if that was the wrong move.
Brushing the gelcoat in my initial thoughts are am I ever going to get these brush strokes out. Like I said paint and gelcoat work is where I always fail.
My hopes is that because this is a mold and the forthcoming pieces won’t be really put under much stress I can get away with doing a few rounds of gelcoat and sanding to make up for my lacking application technique. I did realize just not that out of the habit with the fairing I put surfacing wax on this first coat of gelcoat whereas I should have just left it without and brushed the next one or two coats on without sanding.
Owell guess that means I’m done for the day.
Raining tom so probably too much humidity to do much other than sanding anyway
This post was edited on 12/17/21 at 12:19 pm
Posted on 12/17/21 at 12:44 pm to Timmayy
Nice work. If y’all are working on boat this weekend hit me up (I think I have you on my FB). Kinda wanna come check out the boat if y’all don’t mind. Gonna be starting on rigging the 40 razor head here shortly and y’all’s should be pretty similar.
Posted on 12/22/21 at 9:46 pm to CP3
I’ve done all I’m going to do to the mold. Time to wax it about six more times and see if the first part pops out. I’m debating putting pva on but again I’ll have to brush it and I don’t want to impart brush strokes onto a pretty well polished mold. Idk may chicken out.
What y’all think. I’m giving myself a 7/10 since I sanded through the gelcoat in a few spots but I don’t see that making a difference in the parts that’s pop out
What y’all think. I’m giving myself a 7/10 since I sanded through the gelcoat in a few spots but I don’t see that making a difference in the parts that’s pop out
This post was edited on 12/22/21 at 9:47 pm
Posted on 12/22/21 at 9:48 pm to Timmayy
Looks great
Posted on 12/23/21 at 12:08 am to Timmayy
quote:
brushing gelcoat on.
Man I tried that once and sanded everything down, and called my buddy he showed me how to spray gelcoat.. GAME CHANGER!
Posted on 12/23/21 at 6:04 am to Lsutigerturner
Yeaah I just only have a pancake compressor and don’t think I can justify buying another bigger one that has the capacity and scfm to run a gun
Posted on 12/24/21 at 12:46 am to Timmayy
I borrowed a friend's DeWalt 65gal compressor and just put less hardener in it, kept spraying until whole boat had I think 4 coats or so. And then final coat load up on hardener.
I didn't really put to much pressure on the compressor until that final coat when I had a bit more hardener.
I later bought a 35gal on FB marketplace for like 50$ and have done some gel work repair and it's perfect.
I think I could do my whole boat off the 35 gal compressor just less hardener and make sure you have it in an area that it can take a whole 24+ hours to dry without getting crap blown or stuck onto it.
I didn't really put to much pressure on the compressor until that final coat when I had a bit more hardener.
I later bought a 35gal on FB marketplace for like 50$ and have done some gel work repair and it's perfect.
I think I could do my whole boat off the 35 gal compressor just less hardener and make sure you have it in an area that it can take a whole 24+ hours to dry without getting crap blown or stuck onto it.
Posted on 12/24/21 at 12:50 pm to Lsutigerturner
Do you not thin with styrene? What about the catalayst makes you need the bigger gun
Posted on 12/24/21 at 3:51 pm to Timmayy
I'm not a pro, but decently handy. I do not know what that is other then what Google just showed me.
A good friend of mine who is a red neck Puerto Rican showed me.
I used a $120 m3 spray gun with I think the widest nozzle at the paint shop, bought like a pack of 12 cups for the gun, a few gallons of acetone (used it for everything from cleaning tools to cleaning gelcoat and prepping) and like 3-4gal of gelcoat from ace hardware. Just eyeballed the whole thing after watching my buddy do two batches and I did the rest of the boat.
Used some wire pent in a figure eight to not damage the cups and used a drill to stir. Thinned it out with acetone, after stirring to the texture I wanted added 2 -3 drops of hardener stirred it again and then went to town for about 15 minutes and then back to table to repeat mixing. Much better with a friend to clean your old cup with acetone, and start mixing new cup when your about half way done (wait to add hardener untill you give him empty cup)
I only did a few drops of the hardener per batch until I had the whole boat pretty thick and then added like 7 drops of hardener per cup until I had whole boat covered with the heavy hardener mixer.
The ease of polishing/sanding down the gel coat was night and day difference. I will never roll of again. I have made small repairs a few time so much cleaner and more even. But rolling on does lay of on much thicker, just got more work to sand it down smooth
A good friend of mine who is a red neck Puerto Rican showed me.
I used a $120 m3 spray gun with I think the widest nozzle at the paint shop, bought like a pack of 12 cups for the gun, a few gallons of acetone (used it for everything from cleaning tools to cleaning gelcoat and prepping) and like 3-4gal of gelcoat from ace hardware. Just eyeballed the whole thing after watching my buddy do two batches and I did the rest of the boat.
Used some wire pent in a figure eight to not damage the cups and used a drill to stir. Thinned it out with acetone, after stirring to the texture I wanted added 2 -3 drops of hardener stirred it again and then went to town for about 15 minutes and then back to table to repeat mixing. Much better with a friend to clean your old cup with acetone, and start mixing new cup when your about half way done (wait to add hardener untill you give him empty cup)
I only did a few drops of the hardener per batch until I had the whole boat pretty thick and then added like 7 drops of hardener per cup until I had whole boat covered with the heavy hardener mixer.
The ease of polishing/sanding down the gel coat was night and day difference. I will never roll of again. I have made small repairs a few time so much cleaner and more even. But rolling on does lay of on much thicker, just got more work to sand it down smooth
Posted on 12/24/21 at 3:59 pm to Timmayy
I used a older model of the 3m accuspray, like 2 of the red tips, and like 12 or so cups, mixed everything in small batches don't mix big batches.
Posted on 12/29/21 at 6:45 pm to Lsutigerturner
Well let’s see what an Amazon special spray gun a pancake compressor and someone whose got no clue what they are doing can do.
First coat of pva sprayed on really light. Not sure if too light but don’t want to put a run in it.
Initial impressions are I feel like this el cheapo gun that came with three sizes tips (1.4,1.7,2.5) will spray better than what I can do with it.
Spraying the pva to get a feel for it. Will brush on the gelcoat inside of the mold but will try spraying the gelcoat with the 2.5 tip on the inside of the finished part once layup is done. I figure even if that goes horribly it can’t be any worse to fix than the brush strokes I was getting with the gelcoat.
Surprisingly the pancakes can go a full 2:30 minutes of nonstop trigger pull before the regulator at the gun starts to drop off of its 30 psi setpoint.
Defintiely think I can easily get away with spraying small stuff with it.
Posted on 12/29/21 at 6:51 pm to reds on reds on reds
quote:
I’m a Naval Architect by trade
Who you work for?
Posted on 12/30/21 at 8:07 am to maisweh
A small design and consulting firm based out of Houston. Has a sister company in Rhode Island
Posted on 12/30/21 at 8:26 am to reds on reds on reds
You go through the nav arch program at UNO?
Posted on 12/30/21 at 9:43 pm to bayoudude
Yeah did the grad program. Did undergrad in Petroleum at LSU
Posted on 12/31/21 at 1:24 pm to reds on reds on reds
quote:
small design and consulting firm based out of Houston
Shearer group?
Posted on 12/31/21 at 1:50 pm to maisweh
That’s the one.
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