sophia13
spending too much on rocks
RIP Jason Strickland, AKA sophia13
Member since March 2018
Posts: 327
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Post by sophia13 on Nov 7, 2018 18:57:32 GMT -5
On larger or harder rocks my carriage gets to the blade and cuts about an inch or so and stops. Heck every once in a while I clamp it down and it doesn't even go. It acts like I didn't clamp it. Then I move the carriage back and clamp down and it goes again. On some spots I can actually move(slide) the carriage and vise back towards the front of the saw with the jaws clamped down, then after a few inches or so it will catch and hold tight. I think it's the feed screw and maybe jaws but I'm no expert by far. Heck, I'm still learning to cut dino poop and obsidian properly I ordered a new spring but I don't think it's that simple. What are your thoughts please and thank you.
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AzRockGeek
has rocks in the head
Member since September 2016
Posts: 635
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Post by AzRockGeek on Nov 7, 2018 20:35:39 GMT -5
Post a pic of the split nut assembly in a closed position and a close of the threads of the feed screw in the area where the split nut would be when it quits feeding.
It could be a weak spring, gunk stuck in the threads of the feed screw, worn out slit nuts, dull blade, feeding too fast. The old HP14/16 are ripping saws and cut WAY too fast in my opinion, especially for large hard materiel like Pet Wood. Are you on the largest pulley(Slowest) for the feed rate?
Tim
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sophia13
spending too much on rocks
RIP Jason Strickland, AKA sophia13
Member since March 2018
Posts: 327
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Post by sophia13 on Nov 15, 2018 5:12:47 GMT -5
Largest pulley.
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Post by Peruano on Nov 15, 2018 19:47:20 GMT -5
All of the above could be operant, but a good guess might be that your rock is slipping and causing a bind, or your sled is not moving parallel to your blade which also results in a potential for binding once the cut has proceeded sufficiently. One indication of a binding rock is that the sled is hard to pull back even after the feed dog is opened. Try cutting a small rock or a long cut on a thin rock that will be less likely to bind. Make sure that rock is tight in the vice and use wedges to further tighten it if you don't have good surface contact on both front and back. You should also look at the utube info on hp feed dog adjustment. It is very informative. Google it if you have not seen it. I hope this helps.
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panamark
fully equipped rock polisher
Member since September 2012
Posts: 1,343
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Post by panamark on Nov 15, 2018 22:00:51 GMT -5
On my HP it was doing similar. Turned out the brass threads had worn so that the split nut wasn't closing enough. The bottom of the nut was making contact with each other before the threads were well engaged. So I carefully ground away a bit at the contact point on the split nuts until it was fully engaging the threads. Problem fixed. I hope this helps.
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