Forum Replies Created
-
AuthorPosts
-
It was the thread. I bought a replacement screw of ebay. The knob and handle was in rather bad condition with deep pitting. However, the thread was covered with heavy grease and cleaned up quite well.
The half nut does not jump away of the screw in any position. A great improvement. I guess the original screw must have had very busy life and spent most if its life in the first 4″.The vice now works as it should. Esthetically though it us far from what I would be happy with. Need to use some more elbow grease on polishing the handle and the knob.
Just wondering, what do you guys use on the thread? A grease or an oil?
Hi Darren,
yes I got your videos. I have carefully watched them and compared to mine and do not see any difference. It confirmed I put the vice together in the right way, visually there does not seem to be any difference in the spring tension.What I have noticed when inspecting the screw when I run finger along the thread if feel “sharper” for the touch towards the far end of the screw. I will try to measure the wear with a feeler gauge when i get back from work.
I made a quick video https://drive.google.com/file/d/1cRrDbqc3P59n0W62fFtmye6mdI0a2P5s/view
Yes, I know about the QR bar. The hole for the screw is slightly offset. Guess how I found out 🙂
The QR spring is tight, really tight. It is hard work to squeeze the QR handle. It is holding the half nut on the drive screw just fine when the jaws are wide open. However, that does not seem to be strong enough for the first 4″ or so.
It is definitely the dog (or half nut as I call it) that is jumping off the drive screw – already checked that.
Yes, the vice was completely taken apart and all bits were cleaned individually. No obvious damage on the half nut. Also the screw does not have any pitting or any obvious mechanical damage probably thanks to the screw cover it came with.
I used a not branded multi purpose oil – nothing special to be honest.It slips when tightening up. When the jaws touch and I keep tightening it the QR handle starts moving towards the screw – the half nut moving downwards away from the screw. This happens only if the jaws are open less then about 4″. It feels like the screw is not “biting” into the nut and instead doing exactly opposite.
So as a result, I can clamp pieces wider than 4″ without an issue. For everything smaller I need to hold the QR with one hand and tighten the vice with other hand. A wedge might be used however I do not want to loose the QR function.
-
AuthorPosts