How To Make A Fiberglass Mold For Making New Parts On Your Boat!!

[@MissionaryForMexico]

There is a lot of time consuming work to make a mold for fiberglass parts. But the prep, the finishing of the mold is required, to get the finish you will desire, to get the replacement part to look like a factory replacement. This man is showing you exactly how it's done! I want to stress what he is revealing, the time you take to make the mold as perfect as possible, and the finish you obtain is what you are striving for! This man knows fiberglass!

[@leesmith2200]

Nice approach. I built fiberglass fishing boats for 14 years and occasionally helped build both plugs and molds. While I am grateful to be in another occupation now, those were some pretty good years.

[@TryTryEh]

I swear... I love your videos! You are like the Bob Ross of fiberglass! I appreciate your work!

[@tylerw1418]

Haha that is accurate!

[@meneelyhouse]

😂👍🏻

[@reebookerjpon4338]

No other channel comes close but dangar marine ...these guys are the best and most informative people around ones a boat man and the other a motor man! Can’t beat these guys!

[@tommo7146]

Out of all the videos on KZbin I find yours the the best, easy to follow you don’t miss any steps out and thorough descriptions of the products you use! Thank you 👍

[@johnholmes6897]

I do enjoy a craftsman that works cleanly. So much less chaos Great video

[@tylerw1418]

You’re a true pro. Thanks for sharing your knowledge.

[@TheDecguy]

Good to see you on screen again. It's been a while. Working for a living can take up a lot of time!

[@mhansl]

Me 2 years ago: Ok. Fiberglass mold. Me now, after our boat got damaged: WHERE'S THAT VID ANDY MADE ABOUT HATCH MOLDS!?!?!?!?!? Thank you for your channel, Andy. It's been sort of a dip in subscription until now, when we really need it. Repairs, refinishing, remodels.... Your channel just became a serious go to for us.

[@jimmycrites1647]

Can you use sign board for mold

[@jimmycrites1647]

Making a conoe

[@Twelvestonestacking]

Angly Dangly thingy.....funny .... funny! Things that are fun to say are WORTH repeating... as always truly informative techy stuff. Blessings, Scott

[@stevenclist6644]

All I can say is a big thank you, without your knowledge my boat would still be in the waiting to be done , especially the stern repairs .

[@toddjohansen7072]

finally someone made a great video on making molds !! awesome instruction Andy !! thank you ! peace bro

[@FireCrowsWorkshop]

Dude, once again your tips save my butt and save me a lot of sanding! I might not work on boats, but currently building a plug for a miniature car (tot-rod). Sometimes I just get stuck with some things, but yet again, watching your video solved one of my problems! Thank you!

[@keithmorrison8199]

I work for a performance boat manufacturer out of Michigan but have been wanting to do more side work with composites, the tip on lightly cutting ounce and a half matting for thinner strips is genius and I’m kicking myself in the rear for not thinking of that, great video

[@ormandhunter3546]

Thank you Sir for being thorough and explaining clearly.

[@davedmusic]

Love the channel! Thanks for taking the time to make these and share your personality and craft. It has been a bible for me!

[@IslanderSailboatInfo]

Been the best for years Andy, still the best, well maybe sharing it with that guy from Tips from a Shipwright 🙂

[@Captaingps65]

I have to say You are Good at what you do! I have seen a lot of your work s and you must be just as good at editing ! Haha It’s nice to watch a video and Actually learn something that you can use on your own boat. Thanks again.

[@jeffg5579]

Loved the cute closing !!! Great information, thank you sir

[@patriot1303]

You are amazing - thinking of becoming a patreon this is one of the best tutorial channels I’ve seen for anything!

[@Joethebaitguy]

Great video I’m new to boat building and this really helped

[@amcrome]

I'm such a rooky -I thought the wood was the mold and was waiting for you to pop the part out and finish the top - doh!

[@eshootziscrs2868]

Same thing in a way. He will end up repeating the process with a little variation. So really you are right, just ahead of your time.

[@jamesford8315]

Thanks for yet another great video. Will be performing your magic this spring for port and starboard cockpit lockers, no originals.

[@mickfisch96]

Hi Andy. I’m new to your channel and love it. Thanks for sharing your years of experience. Much appreciated.

[@todddunn945]

Hi Andy, nice project, but as mentioned below, sometimes you just need to be a bit bold. When I have made molds from parts I have always laid up the mold on the part. The procedure is pretty simple. Clean the part then wax it with 6 coats of release wax. After that spray the waxed part with PVA to guarantee release. Once the PVA cures you are ready to start laying up the mold. Start by gel coating the part then put on 3-4 layers of chopped strand mat and finally any reinforcing layup you want. Let it all cure, trim the mold and pop it off the part. You are now ready to lay up the new part which will be exactly the right dimensions AND in the case of your hatch will have the non-skid molded in. If the part you started with was in good shape you won't need to do any sanding or buffing.

[@boatworkstoday]

I gave up being bold a long time ago and traded it for caution (when possible ;-)

[@SailingInconceivable]

Not to mention, these tips can be used to make entirely new parts where a prototype is nonexistent.

[@bigglesbuilding3348]

@Todd Dunn Precisely, thats what i would've done, alot easier, thats the great thing about composites though, there's many ways of doing things, not that this is the wrong way or anything...

[@racerxv6valvoline424]

Thanks Andy, Now I know what to do when I make a mold for my console for my bass boat. I am going to give this a shot and I will send you some updates.....

[@curtisprincemusic]

Super awesome Andy!! Really appreciate this vid! I was one of your subscribers that asked about a “mold making vid”, so thanks much! Strongly considering building our own hard dodger for our Crealock 37. I’ve been a woodworker for 30 yrs so the wood part is easy, but I really needed the instructions for all the other steps. Feeling much more confident after this vid. Thanks again Andy! Peace

[@demagchevy]

Wow, you really did this the hard way! Your supposed to use the old hatch for the plug. Make sure the old hatch is perfect, wax with mold wax, 3 to 4 layers of pva, 30 mils of tooling gelcoat, 2 layers of .75 oz chop strand, 2 layers of 1.50 oz, and 2 layers of 3 oz. You can reinforce with pieces of plywood, but I prefer 3/4 square tubing. Now you have an exact replica of what you started out with no sanding required before or after your part is done. I read that you didn't want to break the good part, that's a valid reason, because that is a chance you take, but there are ways around it like building flanges and using clay to make sure there is no hangups. Not knocking you, just not the way I would have done it. And for those people that think I'm being g a smart ass or a troll, I'm neither, I just know what I'm talking about.

[@kevinwells768]

nice video - but that was my thought when i saw this.

[@renerasmussen5826]

I am so grateful that you Are doing theese vids thank you great stuff i am doing a compleet re build right now i have learnt so much 😀😀 👍 👍 have a nice day Andy

[@joejunior1974]

So many helpful tips and tricks. I can't thank you enough for sharing them!

[@TableRockDiverDougB]

I used your earlier vids to make a copy of my tread pattern for my 88 Cruisers Inc. Worked awesome. Even my mechanic couldn't tell it wasn't factory. Thanks for this video. I enjoy watching your different projects

[@Cynic58]

Andy, thanks for all the informative videos. With your help, I will soon start my small fishing boat build with confidence!

[@jasonmcintosh2632]

Awesome video. Those molds are a lot of work!

[@ipipunic]

Great videos Andy keep it this way. One question about this mold makeing. Why you didn't use origanal part to make mold applying over it PVA or wax and the gelcoat + fiberglas to make mold?

[@stevennewellproductions]

Bro easy is NOT the word for this 😂

[@geoffstein3896]

Great video mate, your tips help out so much.... With how much work my boat needs I wish I was your neighbour 😁

[@randalllay806]

Thanks Andy!! Keep the videos coming, really appreciate all the info.

[@Rodneydncn]

I learn so much from you! Thank you so much for the video, see you on Patrion

[@TrailToughTrailers]

Andy... great videos!!! Every time I watch one I itch all over. I hate the idea of fiberglassing anything, which bring me to a couple of questions. Do you ever do things outside the boat industry like RV parts and do you train others for money? Thanks for all your videos and your attitude towards doing things... I love the easy going approach! Hersh

[@tomharrell1954]

This is the man to teach you!!!

[@AISAsoft]

Thanks for sharing all your knowledge, I have learned quite a bit watching your videos At my retirement I started entertaining growing tilapia in my backyard but I have been unable to find a local supplier of a coned bottom drum for the fish poop settling tanks in Costa Rica so I thought why not make my own, however, I have found tons of videos on how to make a two part mold for drum like figures where the nice finish is on the outside (like planters), but none on how to make a mold of a drum like structure where the nice finish is on the inside of the finished product, I do not think you could make a 2 part old that comes off once the exterior is hardened Can you suggest a way to to do this kind of moulding?

[@woodratworkshop5968]

Nice one Andy, that's really useful.

[@mucuchnatasoon]

Thank you, Andy, for this video!!!

[@DoItProjects]

Hey, you've got a great channel here! Thanks for sharing all your expertise. Can't wait to catch up and follow along.

[@imwteach]

So why didn't you just make a chopped mat mold over the hatch itself?

[@davidGrainger]

Yeah - repair any dings in the original hatch, wet sand & polish, PVA, good to go. Lot faster to just pull a mold off the original part. Must be a reason - Andy wouldn't have gone through all that extra work for nothing.

[@barmaley1982]

The guy who made the order wanted the hatch back. He explains it in the beginning.

[@billgreen8966]

@@barmaley1982 by making a mould off the original you don't destroy the original.

[@chopped27]

@@billgreen8966 if it’s properly released why would it get destroyed? I’ve done that many times with the parts Ive made.

[@markgoodman1556]

I agree. Makes no sense to do all that when you have a part to use as the mold. As others have pointed out there are much easier and cheaper ways to make a one off mold too.

[@MrDiogoSilveira]

Hi there. I have watched your videos and let me congrats you for your experience and for your projects. I have finished my center console, but when I got the concole out of the mold some of the gelcoat doesn't cure and is wet. What can I do now? Thanks.

[@fintryendrickwildlife1619]

thoroughly enjoyed … from Allan in Scotland

[@timlong8987]

So Andy, Why not make the mold off the part that was given to you. Is it because it had a grip texture on it? Tim in Australia

[@stephenadams5293]

Once again a Great video, I’m hoping to start to do some light fibreglass repair on my 19.5 ft this spring. Your videos have been very helpful. Looking forward to the next one

[@BrianCollins]

It might have been covered as I'm juggling things while watching this, but why not use the original part as a plug to make the mold?

[@mehmetsavas7192]

because they are not the same size😉

[@MBicknell]

​@@mehmetsavas7192what are you talking about bud....hes literaly build somethong he could of cast outta resin. Hes made his life waayyy harder doing it this way

[@deleted_why]

resin shrinks as it hardens

[@BrianCollins]

@@deleted_why I didn't know that. Good reason.

[@SailingInconceivable]

Excellent, Andy! We have a future project for Inconceivable - a mid cabin skylight to hatch conversion - which may incorporate some, if not all, of your tips from this vid. Thank you, thank you! ~Hans

[@bradley3549]

Aside from the very good question others have posted about using the extra part as the plug. Another question I had is why both glassing the plywood form at all for this mold? It requires no extra strength - and in reality you could probably have benefited from being able to disassemble the mold for a one-off part. Something like melamine board would have made a part like this an absolute snap to create.

[@xXBocephusXx]

Great video Andy! Very informative and interesting. Also, I love that tip of scoring csm before tearing! Thanks

[@Ja518]

Hi Andy, do you have any videos on repairing random holes? Will be removing an old fiberglass twin engine bracket on my boat and want to patch the holes up so I can mount the new bracket in a sturdy transom. Cheers!

[@100nauticaargentina3]

you make this look really easy...Greetings from Argentina! Nice videos!

[@justinmobrien91]

Really informative and well presented

[@exploreseafaring]

Great to see another video! In college we got taught you need to allow the fumes to escape a mold while it cures. They will gather in the base of the mold as they are denser than air. Is that something that only relates to deeper molds or is that not really going to make much difference to the overall end cure?

[@quiquecars]

Hello all, im new on the Fiber glass build parts, this time i have to make a complete falt surface about 6mm thik, my question is, should i take a regular glass as a mold, Apply wax or pva? The thickness I would have to make all out fiberglass or some in between. Thanks for help.

[@lamonttblackshire1638]

😂😂😂 The epic music on the time lapse MADE MY MORNING! 🙏🏽🙏🏽

[@YooTooobJeff]

We always sprayed PVA in the mold first, let it set, then sprayed gelcoat, then did the fiberglas buildup to thickness desired... Pops out finished!

[@geoffstein3896]

The best Andy 👍

[@jimdunkerton7344]

man thanks, unfortunately a little late for me, 2 years ago i had to make a hatch for my north American 23. i used the original part, it didn't release...well. its basically 3 triangle shapes that make the hatch, nothing flat and nothing 90 deg. its quite a challenge. it didn't come out well but will work till i have time to do it right now that i see how to make a proper mold.

[@2Langdon]

Very good how to demo, thanks.

[@ashipshow]

Nice! This is great info... I plan on making a hatch cover for my bayliner I'm restoring over on my channel and this is what the dr. Ordered

[@biltre21]

Great video, thanks. Since you have the original part anyway, couldn't you make a mold directly from it, wrapping the fiberglass around it?

[@matthiaslindgreen3930]

Hi, would you be able to drop the fiberglass into the mold if you only need to use it once. So you only have one form of wood with some putty in the corner and then a release coat

[@jeffreyacoleman1413]

Sweet project I used aluminum foil on a kayak seat Super cheap and can from to any project

[@dormanski4170]

Thanks great video I could have used that 6 months ago. My next project is a hard dodger. 3 ideas. Are typical glass over plywood make foam core and glass or waxed the core and glass and pop out the core ... any ideas would be great. Plan to start soon

[@AlfOfAllTrades]

Andy, if I could ask a question. I see some people making direct copies by waxing the original part, and then making the mold by applying fiberglass to it, and then reinforcing the mold on the outside to make it stable. What would you say are the pros and cons of yours and the other method? Just stick the answer in a video of you like.

[@patrickkeyser2762]

I love your videos! I was wondering why you didn't use the existing hatch as a master by coating it in wax and pulling your mold right off of it?

[@ianluscombe7429]

Really enjoy your programmes, how would you deal with the mould if a non slip finish was needed.

[@lschneider6109]

Thank you for not keeping the products you use a "secret" and even show close ups. Thanks

[@FritsvanDoorn]

Useful video. Thank you. By the way, I saw your video from 2 years ago too, 2 years ago, and that is a good one too !

[@tigo1236]

I have watched you fill holes while the srface was flat using glass and PE resins...if hole is vertical, do you use filler compound don't doesn't run and if so to what descriptive thickness? Thanks for your amazing videos!!!! Love them!!

[@nathanoppermann8896]

thank you

[@jacobuscoetzee3261]

Hi Andy . Instead of using timber can I cast cement. Does a cement or concrete work for a mould . I want to cast concrete around my 25 foot boat and use the concrete for a mould. Will that work.?

[@mvbigblue7863]

Great video! Been wondering how you make a mold from scratch!

[@blueskypoa]

Thanks for sharing. It helps me a lot

[@vikingsailor7016]

Amazing teaching. Thanks so much!

[@Hyperstasiss]

Could you use this same method to make the molded recessed gunnel rod holders but, would have to make tabs on the outter edge to attach to boat

[@Fulcrum205]

Clay or wax fillets in your corners make it much easier to pop the finished part out of the mold

[@GREEVES246]

i have a motorcycle uses fiberglass pannels i have moulds they are chipped on edge and warped whats best way of straigning them and repair ?

[@JAllredFishing]

Do you worry about losing bristles from the brushes you use? They appear to be the inexpensive type I find in home stores.

[@dawsoncreekinthephilippines]

Nice thanks another great video

[@devodave71]

I love your video's , but I do have a question for ya , I bought a 1978 Glass master tri-hul , some one had hit something and the damage is on the outer Tri -hul and I can not get to the back side and the cracking from the Damage runs pretty far back , I have pics but damage is damage but was wondering If I could mold a piece of dense styro foam as a backer to stuff in the hole to lay down my first layer of glass? have you tried this before? and will it take the heat as the resin tacks up

[@FarmerFpv]

Why didn't you use the original as the mould? This seems like more work, Only time i make a mould from scratch is if i don't have the part available, Is there something I'm missing here? Great job though, very nice work!

[@joelp3009]

I have enjoyed watching your videos and scared but looking forward to rebuilding my new boat. What fiberglass do I use on my transom? And I have chosen to go with Coosa instead of plywood. Can I use coosa for the stringers and decking and if so how much more weight will this add? Ok I’m really nervous about a complete boat rebuild. Any advice will be greatly appreciated.

[@derrickwalter5739]

Im building a wooden boat. Could you do a video on which resin is better epoxy or polyester? I am having a hard time deciding which one i should use. It is for a custom wooden boat made from standard 2x4s and plywood. Thanks in advance!

[@THECARKUS]

Thanks Andy.

[@tomharrell1954]

Go Andy!

[@gatordave6629]

Love your videos I'm young and new to boats was wondering if I can send you some pictures and ask a few questions sometimes

[@TheJohndeere466]

I made a couple wooden plugs and primed and sanded and painted them to make them real smooth. The one I waxed with 4 coats of carnuaba car wax and then when I laid up the fiberglass, it lifted the paint and made the surface pretty rough. So the other one I waxed and coated with pva but this one also lifted the paint when I fiberglassed it. I used rustoleum laquer paint to paint the plugs and they were left to dry for atleast a week. Where did I go wrong.

[@joeschool4724]

For something that small, if you don't want to bother with a gun you can use those spray cans of gel coat from Dolphinite.com. They'll even custom mix the color from a swatch or paint chip. Saves on the mess and clean up.

[@AlsinoFerreira]

another awesome video

[@lukekelly8771]

Hi I have Orkney fastliner 19 and need to make up some fibreglass box to mount my talamex seat on would this be strong enough and would it work out for me thanks !!

[@allensooter8429]

Great job Andy, I needed to see that, I have hatch door on the Cruise A Home that is on the fly bridge to make. The good one I have is a raised panel design. It is going to be a problem to duplacate.

[@gary5831]

You dont use any kind of mold release agent? Very nice video thanks for your time.

[@CapnJackSB]

Andy, How can you tear that mat without gloves on? I get glass slivers every time.

[@quefaitloulou2334]

How simplifying something to make it idiot proof ...you are just amazing ..very good video as always ...

[@mikeford5106]

Curious ... why not use the original part as the plug mould ???