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Author Topic: Ray's Portable Manual Mill Mods & Additions  (Read 7398 times)

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Offline RAYAR

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Re: Ray's Portable Manual Mill Mods & Additions
« Reply #60 on: July 14, 2021, 04:14:37 AM »
Still no pics, but I worked on the band sharpener last evening. I replaced the brass 1/2" pin with a 1/2" bolt and drilled and tapped a 1/4" NF hole through the head for a fine height adjustment. I also radiused the head of the 1/4" NF bolt that rides on the cam as it rocks back and forth as it raises and lowers the grinding wheel. I also tapped the rod that advances the band with a 1/4" NF thread and also installed a lock nut on it. I wanted to have some sort of control in making fine adjustments to the grinding of my bands. After all, this should be a precision operation in order to adjust the amount of grind taken. You only want to grind a few thousands of an inch per pass.

Hopefully will set it up and try it out soon.

Found a pic I took this spring. You can see the brass pin that I replaced and the band advance that I tapped. Will get pics of it when I set it up.



mobile manual mill (local build) (mods & additions on-going)
Shop built auto band sharpener
Husqvarna 50, 61, 254XP (and others)
96 Polaris Sportsman 500
2006 Ranger 4X2 w/cap, manual trans

Offline Vautour

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Re: Ray's Portable Manual Mill Mods & Additions
« Reply #61 on: July 15, 2021, 06:48:23 AM »
Nice piece of equipment you got there Ray,.. if ever you want to get rid of it i'm only an hour away :D 
the Gospel is WANTED by the people in 52 Countries but made illegal by their Government

Offline RAYAR

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Re: Ray's Portable Manual Mill Mods & Additions
« Reply #62 on: July 16, 2021, 03:04:32 AM »
Dug out the back part of the stand of the band sharpener. It has a single tooth setter built on the back of it. It's built rugged enough, but part of the anvil workings of it were not built to with-stand the pressure needed to set the teeth. The anvil part is a 5/16" bolt with a much too thin washer tacked on to it and a pair of vise grips welded to the frame of it to apply pressure to the washer to move the anvil. The washer was definitely a very weak point and just bent easily, no way you could set teeth with this set-up. The anvil was not built to be easily serviced besides. Ground the tack welds off of the washer to remove the the anvil and will be replacing it with an improved service-able set-up. Also need to build an indexer for this setter. Hmmmm...., gotta think this one through. I'm thinking it may be easier to build my hand-crank setter that does both sides in one pass in less than a minute. ;)
mobile manual mill (local build) (mods & additions on-going)
Shop built auto band sharpener
Husqvarna 50, 61, 254XP (and others)
96 Polaris Sportsman 500
2006 Ranger 4X2 w/cap, manual trans

Offline RAYAR

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Re: Ray's Portable Manual Mill Mods & Additions
« Reply #63 on: July 20, 2021, 12:08:25 AM »
This evening, I set up the band grinder and eventually ground two bands. Spent a lot of time in setting and adjusting things. I had two 10 degree bands from the first batch I bought and ran those through. The first one I ran it at 10 degrees, then the second one, I ran it at 9 degrees. I will likely end up getting them to 7 degrees, like the Kasco 7's I'm using and liking. I still have some adjustments and fine tuning to do as the grinding was just catching the front and back of the tooth and not getting down to the gullet. Have some cam and cam follower work to do, but will do that to fit my Kasco 7's and that will eventually be the profile it will be set up for.

Another problem I ran into was the clearance under the band advancer to set a band into place and remove. Will have to do something about that. Will also be looking at making fine adjustments easier to do.

The other 10 degree bands were here at home. Will have to bring them to the shop and run them through. I believe I still have three of those I haven't used yet.

The Kasco 7's are all at the shop, except for the one on the mill, which is at the off-grid build site. I still have 6 of these unused.


Grinding



 



 



 


Micro switch lever is missing for auto shut-off capability.
Rear of stand has a tooth setter that I'm in the process of re-building.



 
mobile manual mill (local build) (mods & additions on-going)
Shop built auto band sharpener
Husqvarna 50, 61, 254XP (and others)
96 Polaris Sportsman 500
2006 Ranger 4X2 w/cap, manual trans

Offline Crusarius

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Re: Ray's Portable Manual Mill Mods & Additions
« Reply #64 on: July 20, 2021, 11:06:24 AM »
Loks nice, how did you make the cam? what material is it?

Offline RAYAR

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Re: Ray's Portable Manual Mill Mods & Additions
« Reply #65 on: July 20, 2021, 12:15:26 PM »
Loks nice, how did you make the cam? what material is it?
It came with my mill, which I've had for three years now. Just getting around to getting the sharpener into service. The cam is solid steel, about 3/4" thick. Looks like I have to re-profile the cam, it's not getting down into the gullet, just the front and back top portion of the tooth.
mobile manual mill (local build) (mods & additions on-going)
Shop built auto band sharpener
Husqvarna 50, 61, 254XP (and others)
96 Polaris Sportsman 500
2006 Ranger 4X2 w/cap, manual trans

Offline Crusarius

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Re: Ray's Portable Manual Mill Mods & Additions
« Reply #66 on: July 20, 2021, 02:01:00 PM »
if you can I would save that one and make a new one. probably not necessary to have a 3/4" think cam. bet 1/4" will be sufficient.

Offline RAYAR

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Re: Ray's Portable Manual Mill Mods & Additions
« Reply #67 on: July 20, 2021, 02:11:47 PM »
if you can I would save that one and make a new one. probably not necessary to have a 3/4" think cam. bet 1/4" will be sufficient.
I believe that cam is welded onto the shaft it's mounted on.  It does have to be wide enough because the follower travels across it as the grinder raises and lowers in it's travel. I did not design this, but it was a nice piece of equipment included with my mill. At least I don't have to build one from scratch. ;) I just have to modify it to work sweetly with my bands and make it easy to use.
mobile manual mill (local build) (mods & additions on-going)
Shop built auto band sharpener
Husqvarna 50, 61, 254XP (and others)
96 Polaris Sportsman 500
2006 Ranger 4X2 w/cap, manual trans

Offline RAYAR

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Re: Ray's Portable Manual Mill Mods & Additions
« Reply #68 on: July 23, 2021, 04:17:00 AM »
I believe that cam is welded onto the shaft it's mounted on.
I looked at the cam tonight and it appears to be pressed onto the shaft, kinda looked like a splined shaft. I also scribed a line on the cam (it's painted) to get a better idea of its' profile. Also looking at and thinking of how to modify the band advancer. Also figured out a simple fix for the missing arm on the micro switch for the auto stop function.

Just did some figuring, it should take about 16 minutes to sharpen a band at about 5.5 seconds per tooth (one rpm of cam). May look at speeding this up a little in the future. I wonder how fast the cam on other sharpeners are turning?
mobile manual mill (local build) (mods & additions on-going)
Shop built auto band sharpener
Husqvarna 50, 61, 254XP (and others)
96 Polaris Sportsman 500
2006 Ranger 4X2 w/cap, manual trans

Offline RAYAR

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Re: Ray's Portable Manual Mill Mods & Additions
« Reply #69 on: July 30, 2021, 03:09:13 AM »
Another mod done to the sharpener. Raised the band advancer (indexer) mount to gain needed clearance when loading and removing bands in the sharpener. Raised it about 3/4" to 1".

I also noticed that the lever has a ball bearing inserted in the bottom for the cam rod.

The black square on the upper right of the switch box is a piece of 3/4" banding fastened with a screw and bent around over the micro switch. It's to replace the missing micro switch activation lever for the auto shut down. You can see the micro switch button in the last photo.

Before:


 


Raised:


 


Reassembled:


 


Rear view:


mobile manual mill (local build) (mods & additions on-going)
Shop built auto band sharpener
Husqvarna 50, 61, 254XP (and others)
96 Polaris Sportsman 500
2006 Ranger 4X2 w/cap, manual trans

Offline RAYAR

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Re: Ray's Portable Manual Mill Mods & Additions
« Reply #70 on: July 30, 2021, 03:54:51 AM »
Where my mill is currently set up. (Off-grid build site)

You can see the winch post setting off to the side in center left of photo.



mobile manual mill (local build) (mods & additions on-going)
Shop built auto band sharpener
Husqvarna 50, 61, 254XP (and others)
96 Polaris Sportsman 500
2006 Ranger 4X2 w/cap, manual trans

Offline RAYAR

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Re: Ray's Portable Manual Mill Mods & Additions
« Reply #71 on: August 20, 2021, 12:57:20 AM »
Responded to a marketplace ad on Wednesday evening and ended up on a road trip Thursday pm., a 3 hr. drive away. Another piece of equipment to help with mods. I have a machining back ground from high school. An oldie (1927), but in very good shape. It's tight and accurate. Also came equipped with a good assortment of accessories. 8)

Turns out it was a professors personal lathe from an engineering course at a university and it got put away and was found many many years later in a renovation project.


South Bend 84-A (1927) ... 11" swing, 4 ft bed


 
mobile manual mill (local build) (mods & additions on-going)
Shop built auto band sharpener
Husqvarna 50, 61, 254XP (and others)
96 Polaris Sportsman 500
2006 Ranger 4X2 w/cap, manual trans

Offline JoshNZ

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Re: Ray's Portable Manual Mill Mods & Additions
« Reply #72 on: August 20, 2021, 01:20:29 AM »
The gates are open now  ;D.

Just reading your older posts, did you ever try dressing a bit off the right edge of the stone to allow you to reach deeper into the gullet without dragging it too hard up the back of the next tooth?

Offline RAYAR

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Re: Ray's Portable Manual Mill Mods & Additions
« Reply #73 on: August 20, 2021, 01:54:23 AM »
The gates are open now  ;D.

Just reading your older posts, did you ever try dressing a bit off the right edge of the stone to allow you to reach deeper into the gullet without dragging it too hard up the back of the next tooth?
It's only a 3/16" thick grinding wheel, so not much width to work with, and if I tried to go deeper into the gullet, it would end up grinding the tooth off from the back side. I don't think this grinder set-up was fully dialed in to get a full gullet grind, thus why I'm going to finish the job and make it conform to my 7 degree Kasco Maxx bands. I also noticed that it drops down on the face of the tooth, then pauses there before following through. I want to make it so it is a continuous flow through.
mobile manual mill (local build) (mods & additions on-going)
Shop built auto band sharpener
Husqvarna 50, 61, 254XP (and others)
96 Polaris Sportsman 500
2006 Ranger 4X2 w/cap, manual trans

Offline JoshNZ

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Re: Ray's Portable Manual Mill Mods & Additions
« Reply #74 on: August 20, 2021, 02:23:33 AM »
Yeah good idea, don't want it hanging anywhere too long.

Interesting project, I'm playing with an old ltaga, I have modified it to use the same wheels and same motor as you by the looks, both from a chainsaw grinder. I managed to find 8mm wheels which is what, 5/16" or so, you could look into one of them? (Not that thatll help your backgrind problem but may give more options once you lower your cam).

I find the same problem most of the time, I just barely miss a 1/8" spot in the bottom of the gullet. Sometimes not though. My bands have been sharpened by a saw doctor here who uses old sloppy gear they're all over the place I think. I'm looking forward to killing them so I can move exclusively to kasco 4s, don't really care if I miss the gullet hah.

I think I prefer it without water, is one thing I've decided! Good luck with it anyway. Certainly nice to take the pressure of "making each band count" off yourself. I found I've gone from always worrying about being short on blades/putting off that next trip/bill at the saw doctors, to having too many and hardly using them to their full life because I'm looking forward to trying the next one I sharpened using whatever new technique, or noticing whatever etc.

Offline VB-Milling

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Re: Ray's Portable Manual Mill Mods & Additions
« Reply #75 on: August 20, 2021, 07:07:18 AM »
Wow Ray! Sooooooo jealous of that lathe!

I've got a good friend in his 80s and he runs the same lathe. It's an amazing piece of equipment and it sounds like you got a honey of a machine.
HM126

Offline RAYAR

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Re: Ray's Portable Manual Mill Mods & Additions
« Reply #76 on: August 21, 2021, 02:22:46 AM »
Wow Ray! Sooooooo jealous of that lathe!

I've got a good friend in his 80s and he runs the same lathe. It's an amazing piece of equipment and it sounds like you got a honey of a machine.
The price and condition and accessories was right, so I snagged it.
I found the manuals online as PDF files, service, maintenance and set-up and also operators manual, so I'm good to go. I was going over some things and familiarizing myself with it before I came home tonight. I unloaded it from my trailer this pm and set it up in it's place to be. Need to install a few lights and set up a tool board for its' accessories.

In its' location, shelf above is now cleaned off.
 

 
mobile manual mill (local build) (mods & additions on-going)
Shop built auto band sharpener
Husqvarna 50, 61, 254XP (and others)
96 Polaris Sportsman 500
2006 Ranger 4X2 w/cap, manual trans


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