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minigrip 555hg blade play
- Thread starter kniferbro
- Start date
Unfortunately, the quality knives from this company declined. I had a problem on 551. I made a thick copper washer to a cure.
- Joined
- Mar 28, 2009
- Messages
- 4,008
Is it a BK?
My recommendation IF you have the requisite skills and it is BK, break it down and sand down the tang till it's bare metal.
This is best accomplished (in my experience) on a flat surface with 600 grit wet dry sand paper, followed by 800, 1,000, 1,500, 2,000 for a mirror polished tang.
Then the PB washers only on the 2,000 grit and only till you get a slight shine, spacing is very important and it doesn't take much work on the PB washers.
Other possibility is that the section of tang that contacts the axis bar is not ground correctly (never happened to me, but this remains a possibility. and for that section of tang that contacts I recommend very slow and very light pressure from 1,000 to 2,000 grit sandpaper on a flat surface as well.
If it's a satin blade, I still recommend breaking the knife down, light polish with 1,500 or 2,000 grit paper and see if the tang is flush, if so, no further work required, wash well. Next check the washers, again 2,000 grit paper and run it across the paper to see if the washer is flush.
Last thing I can think of is the liner may have a burr that's digging into the PB washers, but with it all being flush, it should have no effect, however if there is a machining flaw you can clean that up on the 1,000 to 2,000 paper.
This concludes my essay on how to make your Benchmade knife extremely smooth in operation, however with polished hardware I strongly advise against using oil of any sort and further advise that this can cause the "sweet spot" to be even smaller since the polished surfaces in my experience are mated so well that the slightest increase in pressure can cause them to gum up.
I think around 800 or 1,000 is the highest grit I would go if I still wanted to use oil and at these grits the "sweet spot" will remain a "normal" size.
My recommendation IF you have the requisite skills and it is BK, break it down and sand down the tang till it's bare metal.
This is best accomplished (in my experience) on a flat surface with 600 grit wet dry sand paper, followed by 800, 1,000, 1,500, 2,000 for a mirror polished tang.
Then the PB washers only on the 2,000 grit and only till you get a slight shine, spacing is very important and it doesn't take much work on the PB washers.
Other possibility is that the section of tang that contacts the axis bar is not ground correctly (never happened to me, but this remains a possibility. and for that section of tang that contacts I recommend very slow and very light pressure from 1,000 to 2,000 grit sandpaper on a flat surface as well.
If it's a satin blade, I still recommend breaking the knife down, light polish with 1,500 or 2,000 grit paper and see if the tang is flush, if so, no further work required, wash well. Next check the washers, again 2,000 grit paper and run it across the paper to see if the washer is flush.
Last thing I can think of is the liner may have a burr that's digging into the PB washers, but with it all being flush, it should have no effect, however if there is a machining flaw you can clean that up on the 1,000 to 2,000 paper.
This concludes my essay on how to make your Benchmade knife extremely smooth in operation, however with polished hardware I strongly advise against using oil of any sort and further advise that this can cause the "sweet spot" to be even smaller since the polished surfaces in my experience are mated so well that the slightest increase in pressure can cause them to gum up.
I think around 800 or 1,000 is the highest grit I would go if I still wanted to use oil and at these grits the "sweet spot" will remain a "normal" size.