Multi option refillable spool

2024 - Upgraded version designed - see also the flat storage spool ! Multi-solution modular spool for refill filamentOnce printed on site it will be useful for housing ready-to-use a roll of original "refill". It features two recesses in which to thread a peg of the shape required for the refill's paper holder rotation lock (only one is needed out of a total of 4 recesses, three must remain free). There is also provision for not fitting this insert so as not to have this protrusion on the inner surface but this does not apply to the use of original refill units.The method of coupling the two half-wheels was provided by three 6mm metric thread screws having flat heads. The screws can be inserted either on one side or the other of the spool once it is composed including the spare filament. In case it is useful to have a particularly strong opening support reel, consider that it will be possible to assemble it up using six screws instead of three. The length of screws that can