Replacing The Transom On A Boston Whaler 25 ~ Installing The New Plywood Core 

Having to replace the wood on a transom on my project. Thanks for putting these up. Now off to watch you lay up the fiberglass on this Whaler.

Thank you again Andy, your vidio's make my day and further expand my knowledge.

I always thought transom rebuilding would be a daunting task but, you made it look so easy. Thanks!

Hot glue on thin ply = template. Good idea!

I want to say thank Andy you have taught me so much and saved me a ton I really appreaciate it.

Thanks Andy, I am learning so much from your vids. Keep going mate.

I’ve become a better at fiberglassing because of your very talented work and videos. Thanks man.

Your videos are great, and I continue to watch to hopefully start reworking my 86 Hobie Power Skiff. Hoping to build that confidence, and your videos truly have helped me learn so much so far.

Andy you're a wizard mate! I wish I waited another 6 months to do my transom, you've already done a heap of things that would have saved me weeks!

Doing a similar process on a 19.5 Grady White. Looking forward to future video on this repair. Thanks for sharing

Done the same thing with my tidecraft byou and you helped all the way trough, thanks Andy

"Until next time, thanks for watchin man." Andy, once a hippie, always a hippie. No problemo senior, we love U and love learning from your work! Greetings from HOT Arizona.

Removing the wedges gave me howtobasic cooking flashbacks. Loved the video! Just replaced the transom on my fiberglass Jon boat. Thanks!!!❤

There's more than one technique to rebuild a transom and at first I wasn't so sure but I must say I am impressed! I love your videos.

Two worth-the-price-of-admission tips in one video. Nice work! :)

Absolutely new to boat repair and enjoy your videos!! Keep up the great work!!

Nice work Andy! Super informative! Making me glad there is no coring in my boat!

Very, VERY nicely done. Excellent attention to detail - it'll last another 20 years!!!!

I absolutely love watching your videos and I have learned so much from you while working on my boat. Your last video was awesome as I am doing my transom as well. The 2x4's to spread the wood, thank you! I used four 2x2's to split my skin off. Thanks for making awesome tutorials. I am going to pour in Arjay 6101, instead of replacing the wood. You are seeing the same issue I have with the curvature.

Awesome work as usual. LOVE the pattern making. I know I saw you do it before. But it didn't sink in until now. beats my paper method. -Chad

Back in the 80s I had a mobile Marine service I started. Did a lot of fiberglass repair sprayed all grip etc. I still love boats I just don't work on them anymore. I enjoy watching your videos and people are lucky you take your time to post them! Thank you for sharing.

Really looking forward to the next video in this series.

Well done ... building up the layers to flush. That's a lot of miniscule detail work.

Man I wish you could make more than one video a month. It’s so informative maybe you can just make them longer than this one!! Thanks for all you do in making these videos!! 👍👍👍🛥🚤⚓️

Your videos are great Andy!! Would love to see more, I'm starting a project soon where I'm taking a 20' open bow w/a IO and putting a small cabin up front, basically just for a head and a hard top, for fishing Lake Erie, it has a merc 120 that's old and tired so what id really like to do is change the transom around for a outboard motor, I'm looking for design ideas so if you can point me in the right direction it would be much appreciated, btw I did a 6 year appenteship for wooden boat building back in the late 70's and have been watching your channel for fiberglass ideas, I've done several projects with fiberglass and it has been a success thanks to you!!!

I like how you made that pattern. Cool idea.

Very good approach and epoxy is the best. Being from Michigan, I have been using West system products since the early 70's on a DIY basis. Back in the days of the "woodies" and in the fresh water Great Lakes. Ironically, the first repair I did was on a 13ft Boston Whaler. Great job.

Exactly how I did my hydra sport vector transom you was nice enough to give me advice on last summer turned out great thanks again and great vids oh except I highly recommend using bags because it’s a 🐻 to get em out lol

Nice work Andy. I suspect that there was a significant time acceleration of the belt sanding though.

Just found your channel today. I may be doing a nee transom on my 2001 Cobra Coosa bass boat this winter in the off season. I love your attention to detail and your tips and tricks. New sub here.

I had the same issue on the whaler transom I restored using coosa board. I used a vacuum pump and bagged the transom to suck the coosa board tight against the existing structure. Some shaving of the outer layer was needed but 2yrs in its still going strong. Use two layers of 3/4” so it can be pieced in and seams overlapped.

Great videos just wanted to say thanks for all the tips.

I don’t have a boat or anything that needs repaired, these videos are strangely soothing... lol I can’t explain

You make it look so easy

This is a perfect situation for sea cast.

Excellent video! Thanks a million!

good work dude 👍🏼👍🏼 keep going ✌️watching you from kuwait 🇰🇼 😁

I used hydrotek , vinylester, csm, 6oz clothe and sealed it all off with west systems, when I recored my 25 whalers deck panels.

Great job like always 👍👍👍

Makes it look easy. Takes a lot of skill to do work like that.

Yes new video

Brotherly love all the way, I really like the guy.

Hope all is well Andy just waiting on a awesome video from ya

Hey just to say your videos are awesome good work 👍🏻

Great video man

I have learned a lot from and I love your channel. I would've solved this problem of bending the ply to conform to the inside skin by cutting a grid on the inside face of ply about 1/2 " deep and filling the kerfs and areas between w/ thickened epoxy. your ply in this case is just a core material.

Great video Man!

Great video, man!

Good job.

Great work i appreciate your videos mate cheers

Really quality job....

Hey Andy, many thanks for your videos, they have been most useful! Need the next part now!! :-) Also have a question for you; could you use Divinycell here instead of ply, would it give the same amount of strength?

Love your video's MAN!! Cheers!

I have a baton manufacturer in my neighborhood and the tailings from all the sanding can be used for the epoxy filler. The stuff is loaded with fibergalss and hardened epoxy ground to a fine powder. You can make your own bondo flairing compound or epoxy thickening agent. It takes more filler than you think to thicken it otherwise it will oose out of holes and vertical surfaces

Great job

Thanks for sharing man.

Very informative,your skill with the glass side of layup is great, coosa board is what I'm using on my restore so watching your you tube will help me in my lack of layup work,products,and how to fix it ! Can the outer skin be saved for a re-bonding to the reworked area so to eliminate so much sanding to a perfect finish w paint? just a question thanks

Enjoyed the video MAN!!

Great videos, Thanks !!!

Not boat related, but you can install "raised surface" (RS) covers on your electrical outlet and switch boxes in you shop. It'll give it a finished look and help avoid having accidents due to the gaps in between the devices.

Hi Andy, another great video thanks. Here's a question for you or a subject for a future video. How do you clean your tools and what is reusable? With all that epoxy and other chemical, what do you do so that they don't get ruined? Rollers, cups, brushes and so on. Cheers,

awesome video dude

I use sawdust from a palm sander mixed with epoxy. Bonus points for using sawdust from the same species. Dries a bit darker tan original wood.

last fall i replaced my transom with coosa board - its 100X better .vs marine plywood. manufacturer suggested pre-drilling motor mount holes, allowing epoxy/resin to evenly spread and escape as needed. good job

Found your channel a few weeks ago and truly enjoy watching you create magic with your skill. I noticed your wood shop is up stairs. Do you have a lift for your sheets of feather light plywood?

Thank you so much, Andy. I’m following your advice on laying glass over the whole topside on a ‘68 Morgan 22. Top looks pretty straightforward but any suggestions on the deck to hull joint? Rub rail was shot / removed and that hull joint looks strong but UGLY. Any suggestions from you or your audience on best course of action?

Kind of reminds me of when I had to drywall a living room on a 100 year plus home. None of the studs were even or flush etc

Nice job :) Enjoyng these videos alot \m/

your a great craftsman

HI Andy excellent as usual. Could you tell us why you used epoxy in favour over poly. Thanks again for all the great vids.

Well Done

I watch most of all your videos. And they are awesome. You should try some of that transom pore. I did it on a 20 foot Robalo 2 years ago I cut the whole back of the transom off just like you did got all the wood out fiberglass the piece back in poured that stuff in. I could hang 3 200hp Motors on it. Why put wood back in there and set yourself up for problems down the road

thanks

Great channel

Enjoyed the video. Very informative. Question, what is the average cost of getting a transom done on a fiberglass boat?

Bro good video you make it look easy but I'm still scared to rip into my old hydrosport probably just going to get a liquid transom cost more but it's what I'm comfortable with

You say "man" because your a hip guy with a good program. Thanks for the videos

Looks good to me.

I am a composite repair technician and work on wind turbine blades. I was wondering if you could have used some Balsa wood or hard foam on that transom. It is very lite and will bend easily and if you have a more rounded area then you can put slite cuts all through the foam or balsa to get it to bend to the proper shape. Then you can just fill in those cuts with thickened filler. It works great for us.

Should use solid lumber and shape it with grinder and file for your bottom curves and compound angles.

Great job Andy like they say better you than me lol

Scarfing the two might have got the bend you needed, we use that technique making Mackenzie Drift boats, although spot where this was would have been difficult to clamp

Really good job hi is the best

BS1088 is normally hardwood veneer ply layers laminated together with waterproof glue. It will still rot if not waterproofed. A CD or DD (as in the face veneers grading) structural radiata pine Grade F11 plywood with A bond glue joins is fine as long as the whole sheet including edges is waterproofed prior to installation.

Hey buddy wondering why you still use plywood?? You should try using foam core its much lighter will never rott or soak up water! Great video regardless good job

Great job Andy!!! Did you get a look of what is on the other side of the transom? What’s on the other side of the transom?

You could cut kerfs in the plywood so you can bend it a little

British Standard requires that plywood use certain durable glues between ply laminates, minimum criteria for number and sizes of void that can be present per unit area, quality of plies, etc.. it is actually a very good measure of the overall suitability of plywood for use in marine applications.

I know this was a while ago, but... whaler didnt do what you did to originally install the transom. Maybe when you removed the old one, the gunwales caved in a bit? Much like when you do work to a car like rockers and such, you need to brace all the jambs before cutting out structure? I would have been curious to see measurements be taken before and after of the existing transom to see if it bowed when removed, great job though andy, love watching you videos, such a great help on all my projects!

I'm not a boat builder but it would be very easy to laminate 1/8" or 1/4" ply to those contours and built up with wpb glue or epoxy (as per AR103); you would have a strong and water resistant transom. You would then fill in the ply contours with fibreglass and epoxy - simples?

Hi I see two different ways to Rebuild a transom, 1 ways is cutting the transom from the outside. Like this video. 2. Cutting the transom from inside. What determines which side you cut out before you rebuild?

Cool vid Andy. I'm wondering why you use a jig saw for long straight cuts. Also, I sub to Dangar Marine, and he also started building a wooden boat from plans bought online. Didn't you start a DIY wooden boat project also, or did I miss something? I'd like to build a 12 or 14'er using a salvaged PWC pump and engine for use in a shallow river. Thanks for posting

I just bought a similar array of Bessy clamps at a tag sale for a good price. I hope my transom repair is not this extensive. But at least I have the clamps if it is. :-)

Hey Andy - Been subscribed for quite some time - have learned a lot from you. Rebuilt stringers on a Moomba and then fabricated a few things for my 13' Whaler. Question for the transom rebuild on Whaler in this video. Would it have been easier to cut the existing plywood out and start from scratch? Asking for a friend. :-)

Hey Andy how are you your content is always helpful. I’m replacing my transom on my 1986 bomber bass boat I was wondering do I need tie into the the top and bottom shell are just the bottom. They had one of those after market pieces plastic cover Horrible and suggestions

Wish you could do a video on how to cut mesure stringers thanks great video

A lot of people criticize transom replacements from the outside. This job looks excellent and I showed it to the guys who did my job. Would you always replace from the outside or it was it just due to access reasons on this job?

OMG, You look EXACTLY like my brother except that he's bald. But I swear your face is a match to his. Oh and btw, I love your videos they have been very helpful while I restore a 1979 glastron 18.5 ft boat I bought 8 yrs ago and did nothing with.

Andy, I'm a long time follower. How do you suspect those gaps could have occurred? In the mold/during layup? I'm a bit confused. Thanks for the great videos.

Andy have you ever used SeaCast to repair a transom this seems like the ideal candidate because of the weird shapes in this transom