this mini plane trim the edge of the plank that lies against the hull bulkheads.
Did you ever try pushing a rope? Doesn’t work very well! Like the rope the strip wood furnished in ship model kits is probably too flexible to be pushed. If this were my tool I would set it vertically in a vise and pull the wood through.
What Roger said has caused me to decipher what this tool actually is.
First - it is simple enough for a builder or even an assembler to make his own from scrap wood.
Second - it is not a plane. It is a sort of scraper. And not a very good one at that.
A scraper should have a burr that does the cutting and a thicker body - but I use a single edge Gem-type razor blade to scrape a deck. It is just as thin and has no burr. I guess I could produce a burr with a sharpening stone and carbide burnishing rod. But with the Gem I drag the edge at a back leaning angle rather than 90 degrees.
A scraper removes very thin layers - for any sort of bevel three or four passes will not do it.
A mill is a single cutting edge hitting the wood at a forward cutting angle at hundreds of time per minute. This simple tool is trying to do the work of a mill.
The tool would probably be a better design if the channel was much longer - If the cutter was the side edge of a Gem blade honed and burnished to a burr. If this blade was set at a backward leaning angle rather than 90 degree vertical. If there is a threaded rod at the back edge of the blade pushing and feeding the cutting edge of the scraper up into the cut at controlled increments.
And - the primary thing - the most critical thing - if the wood being beveled is a species that actually "wants" to be shaped. It certainly is not Basswood and most certainly not the brittle poor quality stuff in most kits.
