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Mark Rendelman

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Everything posted by Mark Rendelman

  1. This repair was definitely ugly to say the least but fortunately it is I think in a low stress area and the repair should do nicely only time will tell.
  2. Steve this is just one of the dumb things I did in the build, using vacuum bagging at this part of the hull was not an option. Due to to contour I saw no other way to fix it. I will post a picture of my earliest disasters when the boat was just being wired together I forgot how far the back of the boat overhung the cradle put my foot thru the hull and ripped the plywood about 2’ right along the chine and I did what you did But I sandwiched it between two boards screwed together laid cloth on the inside and with the hull glassed it will be stronger than the wood itself
  3. Justin Long long time ago in a galaxy far far away I bought a starter kit from a company called CST and I think they are located in Tehachapi California but you can make up your own, to stick the bag down you can use the butyl tape used for bedding hardware the bag was just a piece of painters drop cloth the white looking stuff is bleeder cloth this allows even draw down of the bag you can use thin quilt batting and the hose is 1/4” vacuum hose you also need to put down peel ply you can use taffeta the stuff I had is Teflon coated and of course you need a vacuum pump the one I used came with the kit and it’s like a fish air pump in reverse But an air conditioning vacuum pump is best if you are going to bigger bags that might need two or more ports. I hope this is what you need mark
  4. Build of hull #24 Todd i didn’t screw the blocks down I used clear packing tape along side the keel on the hull to give a nonporis surface then on top of that I put a piece of double backed carpet tape, then I put down the blocks so that they just buttered to the keel, the blocks are installed on both sides of the keel to keep it aligned and in place. As for the center board pocket this was one of the scariest parts I found the thru the hull tabs that aligned the center board trunk and used them as a guide to know where to make my cut, drawing a line along the tabs and adding 1/4” will give you the net distance of the inside panel after that I added about 3/4” to put me somewhat in the middle of the opening for me and I used a Japanese pull saw to cut the opening, afterwards I used a trim router I made a base out of a scrap ply it was as wide as the router base and about 10” long I glued a block to the base. After putting a small level on the base to find level I cut the block that tall, oo using a 3/8” bearing round over bit to make the radius TAKE NOTE this only works wit the long edges the ends were shaped by hand
  5. Dave you probably can’t see them in the photos due to the shot bags but I did secure wooden blocks to the hull to keep the keel in proper alignment while glueing up. mark
  6. Thank you all for the fine remarks and iam glad that it has inspired you to continue you projects mark
  7. Building of hull #24 Well I have been busy in the shop the last few days it finally cooled down enough for me to work in my shop I glassed the bottom and started to do the fill coat and thought that I had better install the keel first , so I glued down the keel today and will wait for that to cure a day or two before putting on the filets. The keel will be topped of with 3/4x3/16 oval brass as a keel strip.
  8. Thank you for the reply I don’t think the weight will be of concern since this a pleasure build. As far as the cost given the cost of materials And shipping the brass was a bargain mark
  9. Yes it does I went ahead and used what I had and that was mahogany I cut it into 1/4” thick strips and made a gluelam and then weighed it down on the keel until cured I hope it will work well, as for a keel strip I used a 3/4 half oval brass.could not find a hollow back locally and shipping was a killer. mark
  10. Steve! Mark here hull #24 question? what did you do for a keel strip
  11. Build of hull #24 ok this one is on me while working on gluing down the bunk tops some time ago I knocked a weight down thru the forward storage locker open hatch at the time I didn’t think much of it, but when I flipped the boat I discovered this fracture at the bow. I did look to see if there was any damage at the time but it didn’t feel bad.Now that this is the result. I ground out the damaged area as seen in the photos down to the last ply on the inside of the panel. Cutting glass patches progressively larger till I had enough to build the thickness back out. I know it won’t be perfect but it will not compromise the integrity of that panel. Do to the fact that this repair is on a contour I could put weight on it so I decided to bag it,the pictures show the steps involved, if anyone has a different idea I would like to here from you. mark(has
  12. Hi Todd I know iam lucky to have all the head room I need, I only kept the boat on her side one day to cut out the center board well, and trim the chine keys one the starboard side, the next day I did the rest of the flip using come alongs and ratchet straps. Just take your time and think it out before you commit to the roll I did get the neighbors to come over and help out on the come alongs And let me tell you it was a little scary you have a lot of time and money in it and one little error and it all fire wood so just take your time and have the beer afterwards and just think you get to do it again only it will be even heavier. mark
  13. Build of hull#24 got a little further than I expected turning the boat myself so for now I can work the hull where she is , although it looks as if the hull is resting on the floor their is enough of a load taken by the come alongs to just keep the hull from swinging when I work. The use of the Japanese back saw worked great for cutting away the gear teeth on the chine cut them flush with the hull and pretty quickly so why not the trunk opening made several cuts with a small circular saw and then went in with the Japanese back saw this will take a little longer because every so often I have to stop a clean the blade it gets gummed up with the dabs of hot glue I used to tack things together. mark
  14. Yea I build and fly giant scale rc, seems like I should take more pic of my planes, rotating the boat single handed is a lot easier when both points are on center line like a spit mark
  15. Build of hull #24 Today was another milestone for the construction of hull #24 She is now cradle free hanging in mid air like one of David copperfields grand illusions the next step wil of course is to flip her over to start the work on the hull bottom as soon as I can round up a few friends to help out. mark
  16. Hi mark here hope all are well and taking this pandemic in stride. well I finally got all my parts together to install the ballast tank pumps one located in the battery box to fill the tank and one in the other compartment to pump out these should work well enough. The next step is to decide how to exit the tank with the wires probably just drill a hole and run them out and seal the hole with a water proofing seal also I will add an overflow vent tube to prevent the tank from becoming pressurized. This post also includes a milestone for many builders, got to remove the temporary batten along the sheer at long last I can see how well the curve of the hull looks without the batten in the way. I think it turned out pretty good. The filling of the seam and holes will be my next step on the hull but first I will finish off the ballast tank lid and glue it down. By the way I ordered some of the BandB wood flour what a difference it makes in the application of fillets I have been making my own thickener out of sifted saw dust from a local cabinet shop.
  17. Hi mark here Build of hull #24 Cs 20 mklll i know it’s a little off the wall but is there anybody from an other state flying to the mess about this year who might wish to split the cost of a rental car I will be there 10/21/2020 to 10/25/2020 please post reply mark trip canceled due to Covid-19
  18. J hi’ this is the product that i am using .i here by do not endorse or promote the brand but the content is right stuff mark
  19. J I am by no means a pro but the process of installing my bow eye or any other bolt or screw are to use a non hardening bedding compound, for bolts I drill the hole slightly oversized to allow the compound to fill the void, with screws drill your pilot hole screw in your screw dry remove fill the hole with compound also apply compound to the part to be installed and a little on the screw and install and you should have a little squeeze out. This should prevent any water intrusion and if you should need to make a repair at a latter time it will make it easier to remove the faster.
  20. Build of hull#24 well I have been making slow buy steady progress on ol #24 and have temporarily installed bow and stern hold downs while waiting for the boarding ladder to arrive, that was a teadious choice there are somany to choose from but I left It to my wife because in the end she had to be comfortable with the Ladders design. Ok fast forward a couple of days the ladder arrived and as shown in the pictures this was the final choice a nice little fold up made out of 316 ss the question that I have is , does the ladder extend low enough into the water in the down position? the reason for the present location is so the ladder will hopefully be out of the water when in the stored position. I need some input to this topic as I never had a boat with a boarding ladder before
  21. Hello again I have been busy most everyday out in the boat shop, after putting in the chain locker floor I turned my attention to putting in the bunk compartment bulkheads to me this was quite a chore, but got it done in several days. While the bulkheads cured I would work on the ballast tank. I will be using two bait tank live well pumps to fill and empty the ballast tank But since these pumps are not self priming the fill pump will be mounted directly in the ballast tank as far away from the access port as practical to be able reach it for service , the wires will exit through a small hole then sealed with silicone the pump to empty the tank will be located in one of the storage compartments and using bulkhead fittings to enter the tank. The tanks have been Coated with two coats of devthane 379. While all other parts were curing I built the locker lids an Frameworks .when the paint dries the cockpit floor supports will go in as always stay safe and keep on building mark
  22. Hey bill ! dont need the track but I live in Spokane area and I am building a cs20mk3 and would like very much like to get in touch with another BandB owner/builder. Email me if you would like to talk a little shop @ downadirtrd@yahoo.com mark
  23. Ok! So it’s a land yacht! And with all that’s been going on and her being on the front lines let’s hope it keeps her safe. mark
  24. Well! I had no idea that I would step on so many toes I do apologize if I got on somebody’s wrong side, Iam not a religious person by nature and to ask god to just bless America ?? Was wrong of me , of course the entire world needs his blessings no mater their faith, at this time of illness and death. As for the extra help it was ment to keep individuals in one household busy I in no way would encourage any person or business world wide with lockdown and stay at home orders from there governments to break the law. Let’s hope that this ends soon and that we can get back to our so called normal lives. mark
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