as seen in the video, he solders the top and bottom hinges to the pivot rod, he almost always shows exactly what he uses for metal parts, usually nickel plated or straight nickel which can be soldered without too much fuss.
this item is relatively inexpensive and would allow the use of previously posted drill bit chucks.
https://www.harborfreight.com/48v-cordless-14-in-screwdriver-kit-59758.html
this looks like a good candidate, as stated above, keep the rpm's low if you don't want to melt plastic:
https://www.amazon.com/dp/B08TB6J7Z1/ref=sspa_dk_detail_0?pd_rd_i=B08TB6J7Z1&pd_rd_w=xEY0a&content-id=amzn1.sym.4c2f1198-6238-4523-9ffc-0af298bb25ac&pf_rd_p=4c2f1198-6238-4523-9ffc-0af298bb25ac&pf_rd_r=V4GTSYFC8PHEK7NDA5TC&pd_rd_wg=AzeNK&pd_rd_r=e3871aeb-0f54-47b1-91b7-7ba4c22df7e9&s=hi&sp_csd=d2lkZ2V0TmFtZT1zcF9kZXRhaWxfdGhlbWF0aWM&th=1
odd to make a carb that everyone loved to hate....
That being said, it's a necessity for certain mopar stock builds.
(and since everyone liked to throw them out, one of them ran well on my '68 Firebird, you just have to know how to work on them)
please remember that this forum is paid for by Gregg H and most likely the moderators don't get paid for herding cats.
More than likely when you created your account, you agreed to the very things you are complaining about.
It would be unfortunate if the moderators had to adopt the "one strike and you're out" ruling I have seen in Faceborg modeling groups.
Please be nice to the administrators and moderators, they receive very little thanks from the cats they are herding.
nice Cunningham, I've wished occasionally that someone would come out with a Cunningham C3 but I know there's not enough market for such an obscure car.