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| Cam Clamps slipping? https://www.luthiersforum.com/forum/viewtopic.php?f=10101&t=43735 |
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| Author: | powdrell [ Sun Jun 29, 2014 7:12 pm ] |
| Post subject: | Cam Clamps slipping? |
Got a coupla cam clamps that are slipping...they have worked quite well until this month....Basically, after tightening clamp, it loosens over a 60 second period....gotta fix or replace. Would rather fix. -Wood is not cracked, -no oils on the steel bar, -cam bar is good -back of steel is getting shiny....do I need to re-groove the back edge? Re-file grooves? any ideas for fix? Thanks. |
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| Author: | Mike Collins [ Mon Jun 30, 2014 1:46 pm ] |
| Post subject: | Re: Cam Clamps slipping? |
the most important thing to remember when using cam clamps are to -position it-Bring the bottom & top pieces to the joint-Then hold the bottom & top (wooden parts) tight at the back just behind the steel bar -then adjust the cam . Mike Practice this with non -important pieces. |
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| Author: | Lonnie J Barber [ Mon Jun 30, 2014 2:12 pm ] |
| Post subject: | Re: Cam Clamps slipping? |
I don't have any cam clamps. But there is a thing on the internet that shows how to make your own. I would like to have some. Sent from my iPhone using Tapatalk |
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| Author: | enricopg [ Wed Jul 02, 2014 12:58 am ] |
| Post subject: | Re: Cam Clamps slipping? |
The same happened to me. I own about 15 cam clamps. Two of them showed the same problem you are having. It has nothing to do with how you clamp them. I am pretty sure they are broken. Either you try to fix them (you have to figure out how), or you throw them away. I still have them, but I don't use them anymore. It is too dangerous. I also wrote to klemsia but received no answer. Sorry I could not help. |
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| Author: | Colin North [ Wed Jul 02, 2014 5:07 am ] |
| Post subject: | Re: Cam Clamps slipping? |
If the grooves have worn smooth you could try a re-file. Are they Klemsia or another brand? I have about 30 Klemsia clamps and haven't had any problem at all with them over the years. |
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| Author: | Tim Mullin [ Wed Jul 02, 2014 9:04 am ] |
| Post subject: | Re: Cam Clamps slipping? |
The cam relies on wood-to-wood friction. If those surfaces become contaminated, the cam can slip. I disassembled one of mine, a few swipes with 120 grit and a splash of naphtha. Reassembled, problem solved. YMMV Sent from my iPhone using Tapatalk |
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| Author: | powdrell [ Wed Jul 02, 2014 2:08 pm ] |
| Post subject: | Re: Cam Clamps slipping? |
Klemmsia clamps are still working.....these are a different 'brand'.....I'll try cleaning/roughing up back edge.....thanks. |
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