KeithAug
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So here goes with another update - predominantly related to making blocks. I sarted however by making 2 further davits for the gangways - the same as the boat davits but slightly smaller. The boat davits each have a pair of double blocks while the gangway davits have singles. 8 blocks in total. I had previously had a go at block making reported in an earlier post. These blocks however are a lot smaller .200" high by .120" wide and required a different technique. I was also minded to consider how the design could accommodate a "production run" approach. I decided on a fabricated approach, made from mahogany and with the wood grain arranged for strength. I cut the top and bottom planks and then glued onto one plank the blocks which would form the webs. The webs were then created using a slitting saw blade - the webs and the gaps between them were 1/32" wide. Once the webs were cut the closing plank was glued in place. The sandwich was then slit down to the finished width of the blocks. I then drill axially along the strips to take the pulley shaft. I also drilled the holes for the eyelet attachments. The strip was then sanded to the oval shape and blocks of the required type were sliced off. The pulley shaft was inserted and various attachment pieces were made from wire.
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HMS SUSSEX 1693 by 8sillones
KeithAug replied to 8sillones's topic in - Build logs for subjects built 1501 - 1750
Beautifully done - seriously impressive. -
Druxey - Thank you. The wedding is over but the garden needs a lot of work, fortunately today was very wet and so I managed to escape to the workshop to make the boat davits. The davits were made from 3/16" rod. I started by drilling 2 cross holes to attach the cleats (wire). I then made a bending jig so that I could get the curve consistent. I annealed the rod before bending. The end brackets (for attaching the blocks) were made from brass sheet - cut into a strip, folded tightly round the end of the rod and soldered in place. The solder was in the form of paste which made the job less messy. The bracket was held in place for soldering using a medical clamp. The clamp was left to hang vertically under its own weight (which made vertical alignment very easy). The davit mountings were turned on the lathe. I found a bit of profiled tube from which to make the web supports which attach to the bulwark frames. After turning the tube was soldered in place and then the end was cut off with a piercing saw to make make the webs. After polishing the bases were glued in place with 2 part epoxy. the davits were also polished and the job was done. I also found a bit of time to finish the guard rail by making the detachable rail across the step. A very frustrating job given the size of the pieces.
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John, It's good to to see the start of the wood cutting. What is the relevance of the Museum?
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Richard - Hanse 385.
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Recommendations For A Good Milling Machine
KeithAug replied to Thistle17's topic in Modeling tools and Workshop Equipment
I'm not trying to hide it but seem to be hiding it quite well. Try the link after my name. -
Wow! sanding time, what fun, almost the highlight of the build, only watching paint dry beats it. I hope its hand sanding, doing it by machine is so yesterday.
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Tecko Very smart. It's times like this when I remember why I chose mechanical engineering as a career.
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I'm pleased you building again. Hope all turns out well on the health front.
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Richard, Thank you, Bench grinders are quite cheap and essential if you are going to be grinding HSS lathe tool blanks. May be time to reinvest!!!! Unfortunately as our crew got older we made less and less mistakes. The mistakes are what created the interesting stories. The last trip we were out for 8 days and we broke nothing, not even a cup, glass or plate. In our damage report we were were scraping the barrel with the most significant defect being about 6 inch of stitching which had come adrift on the mainsail bag zip. I have a few historic stories left and may get round to telling them at some time. John, Thank you for your continuing interest. Julie, He was besotted from the moment they met and proposed at the top of the Canyon Overlook trail in Zion NP, one knee, ring and all. Nils, Thank you, The deckhouses are natural antique mahogany, I didn't need to stain them. I can recommend cutting up old furniture.
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I find myself looking at the crew and passengers and wonder what they are thinking. My guess is the bridge crew are looking out and wondering where the sea went.
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- kaiser wilhelm der grosse
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Nils, congratulations on your "launch" she looks every bit the king of the seas.
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Dear Julie The J Class gods are quite traditional and I think they may reserve judgement until they see how it turns out - particularly in respect of how you sort out the all important deck gear. I think the way you are thinking that the 2011 refit arrangement of winches, tracks etc may be the way to go. http://www.adamlaystudio.co.uk/wp-content/uploads/2014/05/Endeavour-Boat-International-July-2012.pdf
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And so another post prior to yet another enforced break. At the end of the week my son gets married to his long term girlfriend. I did wonder whether it would ever happen as he is imfamous for some of his quotes e.g: When he and his soon to be wife were out together with friends he was asked:- "Paul why don't you jet get on and propose to her?". Quick as a flash he respond with:- "I'm 95% sure that she is the one for me, but that means their is a 1 in 20 chance that someone better will turn up". Fortunately no one better turned up. Back to the build and once again thank you Julie for your comment and thanks to all those who have visited. I finished the guard rail. It took a bit of time to make the attachment features - they were all very small. The guard wire was .020 clear plastic coated stainless steel wire. For £2 I have enough to last several lifetimes. I attached one end of the wire and held the other end taught with an elastic band while the CA glue dried.
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Julie My preferred order would be to plank the flat deck and then sand it and finish it before attaching anything that stands up above it. Trying to sand the deck planking around an upstanding deck house etc., just complicates the sanding.
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John / Julie - Thank you. The next task was to get on with mounting the guard rail stanchions. The trick was to get them all truly vertical - and hence parallel. Each stanchion sits above one of the bulwark ribs so axial positioning was relatively straightforward. I stuck a strip of masking tape along each rail and marked out the stanchion line on this. With the positions marked it was time for drilling. My home made drill press has the advantage that the pillar can be rotated round thus allowing holes to be drilled which are outside the surface of the base plate, making the accurate drilling of stanchion location holes a simple task. I needed to make sure the drill didn't penetrate too far at the stern - drilling trough the hull would have been very annoying. I find putting a sleeve on the drill works very well as a depth control. All drilling had to be done with the hull sitting true along the waterline and level across the beam. At 6 positions the stanchions are reinforce with bracing struts - to take the tensile loading of the wire guard rail. All stanchions have feet, made by the same technique as used for the deck eye feet. The stanchions are currently in place awaiting gluing.
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Michael Thank you for the feedback. I'll try your flattened wire trick. JD I find normal lathe tools too large for the more detailed work so I grind small tools out of broken centre drills or small diameter HSS blanks. I use 2 diameters - .1875" and .225". I have drilled out a section of square bar to hold them - one tool on each end, held in place by a cap bolt. I need to get round to making more holders.
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Altair has demountable stanchions with a single wire rail which run from amidships to just before the stern. At scale size the stanchions are .600" long. I made them from .062" brass rod with a machined waist of .048". 14 of the stanchions have a single hole at the end while 6 have double holes - the second hole taking the 45 degree bracing strut. The first operation was machining the .032' diameter cross hole in the plain brass rod. The mill was set up to drill the hole with the rare earth magnet end stop set to reproduce the axial position. The wood inset has a .040" x .040" notch cut along its length to provide horizontal location while providing the clamping surface. .062" brass rod is too flexible to turn without support so I made a support out of .375 steel bar - drilled with a .062" hole and then milled to half its thickness. This forms a slot support which fits in the tailstock chuck. Each stanchion took about 15 minutes to make. Mistakes for Herask:- I drilled 2 holes in the wrong place - plugged with dowel - I think I will make a rope mat to cover them as they are in front of a deck hatch. I also cut one deck plank a little short. Also best bot to use the wood stain above the finished deck - I think it will sand out.
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HMS SUSSEX 1693 by 8sillones
KeithAug replied to 8sillones's topic in - Build logs for subjects built 1501 - 1750
Magnificent internal detail and carvings. Very impressive. -
Good to see the shipyard reopened Mark. A bit more info on the laser cutter would be great.
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ancre La Salamandre by tadheus - 1:24
KeithAug replied to tadheus's topic in - Build logs for subjects built 1751 - 1800
Pawel - it would be good to know how you cut the slots? -
Beautifully neat craftsmanship Dan. She is turning out really smart.
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Herask - thank you, i'll see what i can do about mistakes. I'll photograph a few for the next post. I arrived back from sailing yesterday. I'd been thinking about the rail protective plates and decided I could do better. Today I drilled the plates and soldered on wire strips instead of the glued on etchings. I was happier with the result as it looked more like the original. I also collected a few interesting shots from the holiday....................... We came across a replica of a Bristol Pilot Cutter. I have a few more shots for anyone interested. Up a creek we found a few laid up ships one of which was Triton an experimental trimaran warship. We sailed under Brunel's Tamar Rail Bridge, completed in 1859 and still impressive (although a little spoiled by the modern suspension bridge behind it). We also paid a visit to the Eddystone Light - the site of the worlds oldest offshore lighthouse. The current light dates form 1882. The stump is the base of the previous light which was completed in 1759. It was disassembled and re-elected some 12 miles away on Plymouth Hoe a few hundred yards from the Mayflower Steps. 4 lighthouses have been built on the site - the first one dating from 1689.
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Bedford, thank you - Glad you are not jealous, it would be out of character for an Aussie. Richard - thanks for the sailing good wishes. Hoping for decent weather. Druxey - glad you found the build - still a long way to go so hope you find time to visit again. Thanks also to all other visitors, hope you all found someting of interest. Now off to pack.
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