I think this is an inherent problem to this style of clamp - between the moment the lever is compressed to put pressure and the moment it is released, it always seems that the head moves back a fraction... your clamps look similar to the Bosch clamps.
Post by Knight Woodworks on Jul 7, 2020 11:32:51 GMT -5
Nice job on the clamps. I own both the old Mafell screw clamps and the new Bosch ratcheting version with the pad in line, not the offset version shown above. The Bosch snug down as tight as the Mafell. Happy to have both. The screw clamps are compact, easy to transport and handy for other non rail applications. The ratcheting clamp can accommodate thicker stock and are more convenient to tighten.
I bought those cheap clamps when they reminded me of the Bosch design. I’d heard the plate can break off the Bosch’s if dropped and thought welding would be a good choice. Just threw them in a drawer as an eventual project. Recently I saw the exact same clamps Bosch uses, and just slips a head on to, for $7 (which is double what I paid for my p.o.s.). So I dug out mine and tacked on some thin bar to test.
I also see some cad files out there for plastic heads. I'm thinking this might be the best of all choices as you could throw a bunch of heads in the rail bag and only when you need longer clamps just undo whatever ratcheting clamps you have around and pop on these heads.
I opened up the clamps to see if it was possible to improve clamping pressure. It turns out these fake clamps use fake 'bluing'. It wipes off like black soot with a little cleaner. There was also a tiny bit of lube in there so I wiped that off as well. Taking a cue from the F clamps I rasped both edges of the bars quickly and now they perform quite well. Added a bumper to protect edges.
A few more refinements. Even though these are short if you get rid of the bar stop pin you can eke out 215mm / 8.5” of clamping range. Then to improve compression even more replace the hard plastic pads with a softer vinyl pads ($2 for an assortment pack at Almost Tools). Not sure why the softer pad helps but it’s noticeable. Slip the pads on backwards so if they ever migrate (to fall off and get lost) they instead hit the bar and are captured. Then drill a few shallow dimples in the black plastic jaw and glue new pad on with polyurethane which adheres to softer vinyl pad.
abdon: I stand corrected , the angle fence is only attaches with F -Tracks , what confused me was , that the Timberwolf site mentioned it will work with the NFU machine, yes it will work but only I guess when you use the Ftrack , with other tracks Like the KSS L.
Nov 28, 2020 22:52:01 GMT -5
glynnco: Did you order from GereedschapPro? I see them as in stock but I'm located in the US and am not sure if they ship here. I sent them an email asking about shipping but it was returned undeliverable...
Dec 10, 2020 7:37:40 GMT -5
jonathan: I've purchased a lot of stuff from our neighbours @ GereedschapPro.nl As far as I know they are one of the larger Mafell dealers in the EU. I can recommend them, they usually respond quickly.
Dec 11, 2020 13:58:36 GMT -5
NFU 50 Transportation?: Hi Guys, is there some Systainer for the NFU 50?
Dec 11, 2020 14:30:12 GMT -5
frezik24: Hello everyone
Dec 13, 2020 9:20:00 GMT -5
lasse: Thanks for the tip! I have own a mafell rail which is 160 cm and one that is 80 cm. Will it work just as well or will I need to buy rail that is 110 cm?
Mar 18, 2021 15:35:15 GMT -5