#151
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#152
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I made some small fillets for the ends of the belts:
The kit parts are rectangular, but I thought these would fit better. One place I opted to deviate from the 100% paper build was the packing strips for the hull armour. In the kit these are multiple strips of paper lapped and laminated together. I think this may have formed steps and wrinkles, so I thought thin balsa would be better. I began by templating them against the hull with paper: Then transferring to the wood: In order to secure the packing piece to the hull, I made a temporary balsa base, and used a thin balsa strip, pinned against the paper sides (with the balsa packing behind) to get a smooth curve, and to give even pressure for bonding: I used UHU for this. I also fitted the stern piece: The next job is to finally fit the long paper armour outer skins to the balsa, again using the pinned strip method to get a smooth result. |
#153
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So with the armour balsa set to the paper lower hull, made a start on finally attaching the sides. Front section first:
Then pinned in place with a profile strip: Then the rear section. I left it long so I could mark it to get a perfect fit to the front: Then glued that in place onto the balsa: And pinned the whole length while it sets to get a continuous smooth curve: When that’s set, I’ll work on the return at the top of the armour, move the strip up and wick PVA all along it, hopefully to form a smooth, rigid, gap free finish. |
#154
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Fine technique with balsa and pins, thanks. One question about the glue: the Uhu universal doesn't dry too fast right? All the glues I currently use dry too fast for me to be able to work with long sections all at once, I have glue everything section by section and that can cause problems too. Or is that rig you made to secure the curing time?
Tappi |
#155
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Yes, I found UHU is good for large pieces like this. It tacks quickly, but in the event of a placement disaster, you can still peel things apart without damage after a couple of minutes. I made the rig to hold the parts in place while the UHU sets (overnight). The other good thing about UHU is that it doesn't cause wrinkling of large flat areas - like the disaster on the decks I had (while using water based PVA). UHU is useless for smaller parts becasue it's too thick and stringy. Cheers. |
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#156
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High quality workmanship.
Comparable to your previous projects, except a lot bigger. Mike |
#157
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Thanks Michael. Now for the other side. Hopefully quicker this time!
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#158
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On to the port side. I’ve had to re-position the cranked section at the stern. Luckily I’ve got a spare hull piece, so made a good one from two:
Also joined the multiple hull armour sides: And scored the returns. Also visible is one of the datums, which is a piece of tape with a line drawn on it. There’s another on the deck. Trying to adjust fit by trial end error without them is a frustrating exercise…and even with them, there are inevitably some small errors. I then needed to think about bracing the almost complete stbd. side, to clamp the balsa and hull sides against, but without damage. I opted to pin a balsa strip to the waterline profile: Then I could spin the board around and glue and clamp the balsa packing along the belt: Followed by dry-fitting the sides as a check, and to hopefully give them a bit of a set overnight ready for the next stages. These are the tapered infill pieces at each end of the armour return, and then finally fitting the hull sides: Now back on it’s temporary shelf: |
#159
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Continued with preparation for finally glueing the port sides on. Started by cutting and attaching the armour end returns, and backing-up with paper:
Put to one side to dry: Also random things like blocking the balsa in black, behind where the armour joint will be: Looks a mess, but will be covered up. Simple things like this, planned in advance, will massively reduce the visual effect of any slight mis-match between the final joint (which can’t be done with any accuracy before attaching the two ends). |
#160
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First stage of port bow glueing - PVA along the top, UHU along the mid-height stiffener tabs:
Tomorrow I’ll do the waterline edge in PVA, and glue the armour belt to the balsa with UHU, then clamp with a profile strip over night. |
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