This is a manual filament winding setup for filament joining.
The BOM
Filament Splicer - https://amzn.to/2OMz5Ib
All thread 36" - https://amzn.to/38heSC0
Wing Nuts - https://amzn.to/2OHoD4I
Nuts - https://amzn.to/31KDT63
Washers - https://amzn.to/2UHIswB
Beartings - https://amzn.to/2OLfoRg
Filament - https://amzn.to/2SEUR1N
Clamps - https://amzn.to/2vmYLUX