22 ft and 25 ft Cutters by Thistle17 Vanguard Models - 3/64 scale - An Approach To Their Construction

[Thistle17]

I had debated entering any data that I acquire as I build 3 of these kits for a special project I have begun. After all what could I add that either hasn't been documented by others. Those of you who have gone before me know well the challenges of these kits. I would offer that their size and the nature of the parts would challenge one regardless of the skill level.

 

I am finishing a model of the Niagara that was gifted to me by the family of a friend and fellow modelr who has left us. The model hull, masts, spars, bow sprit, all deck furniture and cannon are complete Some minor exceptions are needed as well as 3 major ones. None of the small boats have been fashioned. It has sat under a plastic cover for almost 3 1/2 years until I finally got my head around completing it to a "reasonable" end stage. I will explain.

 

I do not have the room nor time to finish the model fully rigged. Hence I am completeing it sans the masts, spars and rigging. I have completed a case for the model, teaching myself how to work with arcrylics and I built a proper base with the expert and kind guidance of members of the Midwest Model Shipwrights. 

                      

The model of the Niagara is beautifully executed. Notably missing are those life boats. I experiented with the Model Shipways lift method of completing them but was not at all satisfied with the results. The carving did not deter me but detailing at the correct scale dissuaded me. I researched a number of options and finally decided to purchase the Vanguard small boats; namely 3 cutters one 22ft cutter and 2 25 ft cutters. The plans call for 2 cutters and 1 yawl but built up size led me to this compromise selection.

 

As I record this information I realize I have left off one more missing element. No port and starboard davits have been installed. The spare parts I have is one davit short so I am fabricating my own.

 

More to come as I build these bioats.

 

Joe

 

In ensuing segments I will detail how I am going about fabricating these devilish little boats.

 

Joe

Edited March 13 by ccoyle
corrected log title

[ccoyle]

1 hour ago, Thistle17 said:

I finally got my head around completing it to a "reasonable" end stage.

 

Several of us seem to have taken this approach in recent years.

[Thistle17]

Let me say at the outset I am not evaluating the kit or its design and manufacture. I will however record my experience of the build with these kit(s.

 

Like all Vanguard kits I am aware of, the assembly is POB using mdf as the bulkhead material. It was easy enough to assemble the substrate and bulkhead. . At first I assembled the bulkheads with all members from 6 forward facing the bow and members 7 through 10 facing stern. Given the nature of laser "machining" finish I thought I would benefit by preserving the proper bulkhead edge when fairing. Hiowever upon installing the keel there seemed to be a bit too much intereference in mating. The solution was to orient the bulkheads all facing the bow. Residual fit problems were lessened but the fore more bow bulkhead had to be thinned to fit the keel slot.

 

I installed the permanent bulkhead ahead of the transom and faired the hull. Prior I did brace the keel stem as shown. The support height is just shy of the sheerline. During fairing I could feel some of the bulkheads moving on the substrate so several were secured with some PVA. Also using diluted PVA on the keel-bulkhead joints loosened and were ultimately secured with a surgically placed drop of CA, 

 

The transom is an extremely delicate part and is easily separated from its substrate restraints. Even with very deklicate sanding with 220 paper to slightly taper the edge of the transom it broke away taking part of the keel vertical support. It was easily repaired and I moved on.

 

In planking I took a very deliberate approach. However I did not "line off" to create planking bands given the dimmuitive surface area. Instead I measured and recorded the surface length of each bulkhead. That would have been more accurately done on free standing bulkheads I might add. Then taking as near an accurate measurement of a plank width I determined the number of planks at bulkhead 6. Each bulkhead forwad and aft that was measured and recorded gave me a measure of the taper required of the plank as a percentage. Using a shop made plank holding device the sheer planks were fabricated.

 

After recording mid bulkhead points on the end of a maple block I fastened the build to the platform. I drilled out and press fitted pins to hopefully aid in holding subsequent planks down as I progress. I elevated the build so I wasn't bent over the bench. It also stabilizes the build . In a close up of the bulkheads you will note they have been painted. I am a bit unsure of this measure to ease the breakawy of bulkheads when turned over but at this point yet another cautionary measure. In placing the sheer strakes I did use CA at the bow, the stationary bulkhead and transom. In addition a small drop of CA was placed at bulkheads 4 and 8 to keep the plank starter from moving. I am planning on using PVA to edge glue subsequent planks.

 

The plank holding jig is shown below. It is held together with 2 screws. There is a dado running down the inside faces and a spline is located so the plank protrudes at the top. I have recorded the bulkhead positions on the top surface. Before sizing, planks are dampened for the first few inches and formed on the hull. Each bulkhead ,location is marked on the plank in place. When dry the plank is removed and aligned on/in the jig. A sanding block is used to taper the plank at its correct locations based on the taper reduction calculated.

 

Joe

 

 

Edited March 14 by Thistle17

[Thistle17]

Here it is April and I have little to show that I think is worthwhile. I built up the 22 foot cutter to the point where it is off the forms and smoothed on the outside. I started out using a cream like filler from DAP but despite what the tub says about drying to a firm substrate I would disagree. I then resorted to my standby, Nitro Stan, glazing compound, an auto body product. The results were musch improved. Yet the results of the overall work just do not meet my reuirements. It has been put aside for the time being.

 

In the back of my mind when I started the 22 footer I had thought if I foul it up I have sacraficed just one of the 3 projects. My "scarfice fly" so to speak. A learning endeavor. So at this point I pushed back and analyzed where I could improve the build(s). Here is what worked and what I need to work to improve:

1. The elevated building block provided a stable platform and was easily moved about. Fastening the substrate to the block worked. The nails were of little use in securing planks.

2. Painting the formers with white paint was a mistake. Paint residue inside the hull was a clean up problem. I will opt to use a clear barrier that is not paint.

3. Edge gluing proved to work reasonably well. Cleanup externally was easy. I will be attempting some clean up internally as I move along. I will stick with PVA as it is a bit more forgiving when respositioning. I plan to use CA at the bow and the permanent bulkhead and transom.

4. Plank tapering worked. I could have taperd planks to around 1 mm fore and aft for a better result.

5. Planks were damped only in the bow area to achieve the desired form. More on this a bit farther on.

Here are a few considerations for the planking stage of the 25 footers.

1. Before positioning the formers in the substrate I accurately measured the linear run of the even numbered formers, the numer 1 former and the permanent bulkhead and transom. Using auto detail tape accurately placed on the elements I recorded the end points of the tape and placed them on a story board. These were measured with a caliper. This provides a decent tapering schedule.

2. All planks will be overall dampened and temporaily  fastened to the formers to dry before gluing.

3. I will experiment with steelers and drop planks to see if I can avoid slivered planking.

 

I will update as I proceed.

 

Joe  

 

 

Edited April 4 by Thistle17

[Thistle17]

A brief update on the build of the Vanguard cutters. I continue to experiment with methods to improve the build.

 

First some revised approach thoughts above and some new experiences:

1. I had some trouble with former alignment and their height to keep the "keel" straight. Some of the slots for the substrate had to be filed to slightly shift the keel position. I had not encountered that with the 22 foot unit. Secondly I had some engagement problems with 3 of the formers with the "keel". To compensate I had to raise the formers off the substrate slightly to have the two elements mate sufficiently

2. The bow fillers that have to be edge sanded were paired and sanded as a unit on opposing sides. That small act gave a more symmetrical taper to either element. Secondly they were set back away from the bow slot just a tad enabling a much easier transition to the plank lay there and after.

3. I was hesitant to glue every bulkhead to a plank. Instead I opted to skip every other bulkhead except #'s 1,2,11 and 12.

I was able to use the rather crude but effective plank clamps to improve plank pair edge alignment as shown in the photo. They are however of very limited use at the turn of the bilge. I resorted to drilling the planks and former and inserting a pin to hold them in place temporarily.

4. A drop of the fast setting CA in between the home made clamp areas and two adjoining planks yielded a relatively pleasing plank pair edge permanent conformity.

5. There is a point where one runs out of plank "real estate" at the bow to continue planking towards the garboard. Once there one has to begin planking from the garbaord towards the existing planking. I found it impoosible to add drop planking anywhere so I was left to plank wwith minimal taper in the bow from the garboard. Eventually one runs in speared plank ends. What helped this time was to alternate where the taper landed i.e. the upper or lower plank.  This gave a more natural transition of the intersections.

 

Joe.

 

 

Edited Thursday at 02:05 PM by Thistle17

[Thistle17]

Yet another update. I am finding this project a challenge at every step. The 1:64 scale, the parts size and of course my ability give me repeated pause. The attached photos display the current state of the 1st 25 cutter fully planked. The port side as you can see required a good deal of fairing with the glazing compound. I experimented as previously related with minimal attachment to the bulkhead and I got what I deserved. i.e. a not too pleasing outcome from the garboard to meet the planking from the sheer . Hence the glazing cosmetic required.

 

On the starboard side I gave into more gluing to the bulkheads and glued every even bulkhead as well as the bow and stern elements called out prior. The result is better but still needs the glazing coverage as well. I have since primed the entire hull and will have to deal with the "holidays" I have found.

 

Joe

 

 

Edited 12 hours ago by Thistle17