Hull Planking�Sharp Bow The hull is the single largest part of a model ship. Building the hull correctly will determine the final shape and appearance of the model. In your Plank On Frame Boat Construction 76 kit you will find a number of plywood sheets with the laser cut parts. Do this before removing any parts from Plank On Frame Boat Construction 76 the plywood sheet. To construct the hull follow these steps. In the kit there will be a 4mm thick plywood sheet as On 76 Frame Construction Plank Boat shown Photo 1 below. On this sheet there will be a number of parts for the model. The keel, bulkheads and transom are the parts needed to construct the hull.
When fitted and glued together these parts form the skeleton of the hull. The keel, bulkheads BH and transom are identified in Photo 1. It runs longitudinally down the centre of the model from the Plank On Frame Boat Construction 76 stem or bow - front�to the stern�the rear�of Wood Boat Frame Construction Form the model. The keel is the centre piece of the model and everything is Plank On Frame Boat Construction 76 built from it. The bulkheads are fixed at right angles to the keel and provide strength to the hull.
Throughout this course Plank On Frame Boat Construction 76 Plank On Frame Boat Construction 76 we will refer to the bulkheads as bulkhead frames. The transom is fixed at right angles to the keel and sits at Plank On Frame Boat Construction 76 the stern. The transom is not a bulkhead but does form part of the hull construction. Remove the keel, bulkhead frames and transom from the 4mm plywood sheet.
Use a snap blade knife to carefully cut through the tabs holding the parts to Plank Boat Construction Frame 76 On the main sheet. Dry fit the bulkhead frames into the keel slots. Do not glue anything at this stage. Do not force Plank On Frame Boat Construction 76 the bulkhead frame into the keel slot. You may need to use a flat needle file to fractionally open the slot in both the keel and bulkhead frame. The fit should be firm but no loose. For larger models it is wise to Plank On Frame Boat Construction 76 make a working base as shown Figure 1. This will help to ensure the keel does not become distorted.
Cut the slots Plank On Frame Boat Construction 76 in the keel supports to correspond with the bulkhead frames. It is very important to ensure the bulkhead frames are fitted and fixed square to keel. The next step is to fit any bow blocks and stern blocks if the model has them. Both Plank On Frame Boat Construction 76 of these parts will be on the 4mm plywood sheet. The bow blocks are fitted and glued in place either side of the keel at the bow and in front of the first bulkhead frame�see Photo 5.
These blocks will provide a larger surface area on which to fix the planks at the bow. The stern blocks are fitted and glued in place either side of the keel at the stern between the last bulkhead frame and the transom�see Photo 6. These blocks are used to Plank On Frame Boat Construction 76 provide a larger surface area on which to fix the planks at the stern and give added strength to the stern area.
The next step is to fit and fix the false deck to the hull skeleton. The false deck is part of the 2mm plywood sheet. Fitting the false deck at this stage will provide added strength to the whole hull structure. After the bulkhead frames have all been squared to the keel and glued in place and the glue has set it is now time to prepare the bulkhead frames for planking.
Take one of the first layer planks that will be used and lay it across the bulkhead frames. You will see that at the bow the plank does not touch the full face of the bulkhead frame�see Frame Construction Plank On Boat 76 Boat Plank Frame Construction On 76 Frame On Boat 76 Plank Construction Photo 9. The same is the case at the stern�see Photo Across the mid-ship bulkhead frames the plank will lay flat Plank On Frame Boat Construction 76 Plank On Frame Boat Construction 76 on the bulkhead frames.
It is most important that the planks lay flat on the full face of each bulkhead frame to firstly, allow a strong bond between planks and bulkhead frames to be made and secondly, to ensure there are no bumps or Plank On Frame Boat Construction 76 Plank On Frame Boat Construction 76 hollows in the hull surface when planked. The tools you will need to prepare the bulkhead frames for planking are a good Plank On Frame Boat Construction 76 file�one face flat and the other face half round and a sanding block block of wood with coarse sandpaper glued to Plank On Frame Boat Construction 76 it. You will use these to bevel the face of the bulkhead frames to ensure the planks rest of the full face Plank On 76 Boat Construction Frame Plank On Frame Boat Construction 76 Construction On Frame Boat 76 Plank of the bulkhead frames and not just a sharp leading or trailing edge.
As you progress use a plank and lay it over the frames in various positions to check the bevel i. If you do have a hollow spot on one or more Plank On Frame Boat Construction 76 frame s it can be built up using slivers of timber glued to the edge of the frame. Take your time Plank On Frame Boat Construction 76 Plank On Frame Boat Construction 76 with this process. The next step to consider is the keel at the stern.
Pay particular attention to this area. The total Plank On Frame Boat Construction 76 76 Boat On Plank Construction Frame thickness of this area must be such that when planked with all layers of planking it is the same thickness at the Plank On Frame Boat Construction 76 stern post and rudder. Deadwood Area The area between the bottom edge of the keel and the bottom of the bulkhead Plank On Frame Boat Construction 76 Plank On Frame Boat Construction 76 Construction Plank Boat 76 On Frame On Construction 76 Plank Frame Boat frames at the stern is known as the deadwood area�See Photo Depending upon the type of ship that is being modelled the deadwood area may be small or large.
The deadwood area will be planked with two layers of planking consistent with the rest of the hull. The stern post and rudder however will only be planked with the second layer of planking.
So when the stern post and rudder are eventually fitted there is the need to ensure there is a consistent thickness between stern post, rudder and the stern area of the keel. The stern post and rudder will be planked with the second layer of planking Plank On Frame Boat Construction 76 Frame 76 Construction Boat On Plank �say 0.
However the keel will be planked with the first layer of planking�say 2mm thick on each side and then planked with the second layer of planking. Clearly when the stern post and rudder are fitted there will be a significant discrepancy between Plank On Frame Boat Construction 76 the thickness of the stern area of the keel and the stern post and rudder.
To achieve this you will need to take two steps. Step 1. Before fitting the first layer of planking reduce the thickness of the keel in the area Plank Frame Construction On Boat 76 Plank On Frame Boat Construction 76 by approximately 1mm on each side�reduce the keel thickness by about half.
Step 2. Once the first layer of planking has been fitted then reduce the thickness of this planking by approximately 1mm on each side as well�fractionally adjusting to meet required thickness.Plank On Frame Boat Construction 76 Plank On Frame Boat Construction 76
This will then reduce the total thickness of the keel and first layer of planking in the area to be 4mm thick and thus meeting the requirement for consistency of thickness so that when the second layer of planking is fitted there will be Plank On Frame Boat Construction 76 consistency of thickness between the keel and the stern post and rudder.
We will now turn to focus on the principles of Plank 76 Construction On Boat Frame planking the hull of a sharp bow model. The approach will be applicable to all sharp bow wooden model ships with a plank on bulkhead frame construction. There are many approaches to planking the hull of a wooden model ship. As you progress with your modelling you will settle on a hull planking approach that suits you.
Planking the hull is not technically difficult but it does require some thought and study so that the principles are understood. It also requires some patience. Once mastered the process Plank On Frame Boat Construction 76 Plank On Frame Boat Construction 76 is straight forward. It is most important to fit and glue the planks in pairs�one on each side of the hull Plank On Frame Boat Construction 76 as this will minimise the chance of the keel being distorted or bent.
On the model you are building spend a few Plank On Frame Boat Construction 76 moments with a dressmakers tape measure and measure from the top of the each bulkhead frame around the outside of the frame Plank On Frame Boat Construction 76 76 Plank On Boat Frame Construction to the toe of the bulkhead frame where it meets the keel. From your measurements it will be clear that if you are to fit one plank along the full length of the hull you will need to taper the planks that fit Plank On Frame Boat Construction 76 Plank On Frame Boat Construction 76 across the bulkhead frames at the bow of the model.
It is assumed that the planks laid across the mid-ship bulkhead frames Plank On Frame Boat Construction 76 are at their maximum width. We need to determine how many planks will fit into the area between the top of these Plank On Frame Boat Construction 76 bulkhead frames and the keel. Question: If the width of the planks we are using is 5mm then how many planks Frame Construction Boat Plank On 76 will fit across the midship bulkhead frames to cover it completely?
These planks laid across the mid-ship frames will not be tapered Plank On Frame Boat Construction 76 Plank On Frame Boat Construction 76 or reduced in width across these bulkhead frames. As 24 planks will have to fit into this area then the plank width at bulkhead frame 2 will need to be reduced.
The question is what will the width of each plank have to be Plank On Frame Boat Construction 76 Plank On Frame Boat Construction 76 Plank On Frame Boat Construction 76 Plank On Frame Boat Construction 76 Plank On Frame Boat Construction 76 to fit 24 planks into this area? Question: What is the plank width needed at bulkhead frame 2 if 24 planks Plank On Frame Boat Construction 76 have to fit into the area? So the plank wide at bulkhead frame 2 needs to be 3. The same approach can Plank On Frame Boat Construction 76 be applied to determine the plank width at bulkhead frame 3. You will recall that the area between the bottom edge of the keel and the bottom of the bulkhead frames at the stern is known as the deadwood area.
The use of stealers Plank On Frame Boat Construction 76 or wedges will be dealt with later. We will now focus on applying the principles of hull planking. However in model Construction Boat Plank Frame On 76 Plank On Frame Boat Construction 76 ship building we usually start the first plank in one of three positions:. In some cases the first plank will have its top edge 5 to 10mm below the deck level.
This is done to facilitate the construction of bulwarks at a later stage Plank On Frame Boat Construction 76 but in any case it will be parallel to the line of the deck. Many models that feature below deck open Plank On Frame Boat Construction 76 gunports, will require the first plank to follow the line of the gunports and it will run immediately above or below a Plank On Frame Boat Construction 76 row of gunports. After determining the location of the first plank you will need to bend it around the curvature of the Plank On Frame Boat Construction 76 Plank On Frame Boat Construction 76 On Plank Boat Frame Construction 76 hull both fore and aft. You will most probably have to use a plank bender to achieve the required curvature.
Take one Plank On Frame Boat Construction 76 of the planks to be used and place it in position. Gently spring the plank around the bow. At the point Plank On Frame Boat Construction 76 Plank On Frame Boat Construction 76 where the plank starts to bend�mark this as point A�Photo Next gently spring the plank around the stern.
At the point where Plank Construction 76 Frame On Boat the plank starts to bend mark this as point B�Photo We are going to be very systematic in our preparation for planking. Take another plank and transfer these two points on to it.
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