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Post by Drummond Island Rocks on Jun 11, 2021 19:46:06 GMT -5
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standles
spending too much on rocks
Well all I got was a rock ... Cool!
Member since February 2021
Posts: 325
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Post by standles on Jun 11, 2021 19:59:07 GMT -5
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nik
spending too much on rocks
Member since May 2019
Posts: 315
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Post by nik on Jun 12, 2021 5:23:17 GMT -5
There is nothing out of the ordinary there, any decent machine shop should be able to make that for you, I would guess at a price around $75-100. If I could offer one small suggestion, it would be to start with some 1144 stressproof shafting stock. It is already precision ground to the right diameter, straight, and machines exceptionally well. It also has the bonus of being relatively cheap. I have used it for both my 6 and 10 wheel grinder builds. I would send you a chunk that I have siting on a shelf, but shipping from Guam would probably be more than what you would pay locally.
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Post by Drummond Island Rocks on Jun 12, 2021 10:29:26 GMT -5
There is nothing out of the ordinary there, any decent machine shop should be able to make that for you, I would guess at a price around $75-100. If I could offer one small suggestion, it would be to start with some 1144 stressproof shafting stock. It is already precision ground to the right diameter, straight, and machines exceptionally well. It also has the bonus of being relatively cheap. I have used it for both my 6 and 10 wheel grinder builds. I would send you a chunk that I have siting on a shelf, but shipping from Guam would probably be more than what you would pay locally. Thanks- Living in Metro Detroit I can't through a rock without hitting a machine shop but none of them ever want to bother with one off projects. Too costly too stop what they are doing I guess. I sent it out for quote to an online machine shop and got a quote back for $285. I was figuring $100 to $150 tops. Chuck
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Post by Rockoonz on Jun 12, 2021 23:39:27 GMT -5
I hate strongly dislike poly saw arbors. Are the bearings still a tight fit into the housing? That's usually the real problem with those and the tool to get the ends shrunk back down is not something in most machine shops. The knurling may also be an issue, but if it was necessary the hole on the inner blade flange is way too big. If your bearings aren't pressed in so tight that you need a press to do it, it's probably loose and shifting from side to side. If it were mine I would fabricate a new mounting base like a Highland park, attach to existing arbor mount, and get 2 1" sealmaster NP16 pillow blocks for arbor bearings.
Turning a new shaft without a keyway might be possible for $150ish, but if they're only charging another $100 to dial it in on a milling machine and cut a keyway that's a bargain.
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Post by rmf on Jun 13, 2021 10:42:45 GMT -5
Try minerken he makes the dop sticks he may be able to help.
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Post by Drummond Island Rocks on Jun 14, 2021 11:46:06 GMT -5
I hate strongly dislike poly saw arbors. Are the bearings still a tight fit into the housing? That's usually the real problem with those and the tool to get the ends shrunk back down is not something in most machine shops. The knurling may also be an issue, but if it was necessary the hole on the inner blade flange is way too big. If your bearings aren't pressed in so tight that you need a press to do it, it's probably loose and shifting from side to side. If it were mine I would fabricate a new mounting base like a Highland park, attach to existing arbor mount, and get 2 1" sealmaster NP16 pillow blocks for arbor bearings. Turning a new shaft without a keyway might be possible for $150ish, but if they're only charging another $100 to dial it in on a milling machine and cut a keyway that's a bargain. The quote I got for $285 was for a much simpler version of a shaft to retrofit it with pillow blocks. That quote did not include a keyway or knurled area. On that current shaft the blade flange is a snug slip fit until it hits the knurled area. From there it is a press fit. The quote was to make this. having a 1" shaft that only goes down to .75" at the blade area would be better but .75" pillow blocks work for the holes already in the saw for the old poly arbor and they keep the blade height the same. I am leaning towards a complete redesign of the arbor but that still requires a shaft to be custom made. This is a great saw and was cutting straight before I had the old bearings pressed out and back in so if it costs $300 to fix it then so be it. I had also just purchased a new 18" MK-303 blade for it so it is killing me to have sit idle for six months. I like highland parks new arbor that has the setscrews to push on the pillow blocks for adjustments. That is pretty slick. Chuck
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Post by Rockoonz on Jun 14, 2021 21:23:01 GMT -5
Drummond Island Rocks the arbor setup with adjustment screws is not new, every one of the HP saws I have owned, at least one older than me, has had the setup John and Sheldon just copied them using inferior materials.
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Post by Drummond Island Rocks on Jun 15, 2021 7:32:13 GMT -5
Drummond Island Rocks the arbor setup with adjustment screws is not new, every one of the HP saws I have owned, at least one older than me, has had the setup John and Sheldon just copied them using inferior materials. Figures. They have copied so much stuff and passed it off as their own. I have never owned any HP saws just seen one of Johns videos describing that adjustment stuff and thought it looked like a good setup. Waiting for a quote back from cigar box rocks for the shaft. I talked to them a few times yesterday. Chuck
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Post by hummingbirdstones on Jun 15, 2021 8:57:30 GMT -5
Drummond Island Rocks the arbor setup with adjustment screws is not new, every one of the HP saws I have owned, at least one older than me, has had the setup John and Sheldon just copied them using inferior materials. Figures. They have copied so much stuff and passed it off as their own. I have never owned any HP saws just seen one of Johns videos describing that adjustment stuff and thought it looked like a good setup. Waiting for a quote back from cigar box rocks for the shaft. I talked to them a few times yesterday. Chuck I was just going to suggest you call them. They're not the least expensive, but they do know what they're doing when it comes to lapidary equipment. We've bought a couple of refurbished machines from them and have had no problems at all.
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Post by Peruano on Jun 15, 2021 9:19:43 GMT -5
The feature of adjusting bearing orientation for alignment is illustrated in my old saw (4th and 5th photos) in the DIY saw page. forum.rocktumblinghobby.com/thread/57778/ I've always complained that some big name saw fabricators have not offered such ease and precision.
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Post by Rockoonz on Jun 16, 2021 7:59:29 GMT -5
The feature of adjusting bearing orientation for alignment is illustrated in my old saw (4th and 5th photos) in the DIY saw page. forum.rocktumblinghobby.com/thread/57778/ I've always complained that some big name saw fabricators have not offered such ease and precision. Matt sphereguy has added the adjustors to many of the saws in his fleet.
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stillrockinpdx
starting to shine!
Hey!! I got a Star! - Find me on Instagram under stillrockinpdx - I collect other things too.
Member since April 2017
Posts: 45
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Post by stillrockinpdx on Mar 22, 2022 4:09:41 GMT -5
Yes!! It was suggested to me to find either a college level machine shop class and speak with the instructor. Seems that things like this is something the students need to learn and having the finished work put to use is a positive for the class. May or may not need to supply bar stock that will be answered when speaking with instructor. If college level doesn’t work out there are trade schools and possibly high school shop classrooms that may be able to do the work. If this is too late for you perhaps others will benefit. I went to a machine shop here in Portland, OR to get mine machined due them not having any stock laying around I had to buy one and total cost including the machining was like $165.00 but I needed to get saw up and running as it’s been down far too long. Cut too rocks and auto feed motor is kaput.
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vwfence
has rocks in the head
Member since January 2013
Posts: 566
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Post by vwfence on Mar 22, 2022 20:28:13 GMT -5
have you put an indicater on that shaft out on the end by the blade and spun it or better yet , put the shaft in a pair of centers and checked for runout that way ?
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vwfence
has rocks in the head
Member since January 2013
Posts: 566
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Post by vwfence on Mar 22, 2022 21:11:58 GMT -5
I have 2 shafts that i think are the same shaft that i bought to build a couple drop saws that i never got around to . Is the overall on the shaft 12.5 inch's
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