Group Project: Dividing Head - Organization and Design

I think the bushing looks easy enough to make from tubing. With prices for brass/bronze, I'm not sure it's much cheaper that way though. We could certainty look into it. We might be able to find suitable material on ebay or similar. I believe the McMaster part is oilite.
 
True the McM part is oilite, but this not high speed or even will make a real lot of revolutions in its lifetime. I think brass or bronze will still out live most of us. I would think that this spindle in real terms will never make 1,000 revoultions in its lifetime, for most of us not even 100.
 
I made a ball turner rig out of a boring head, but haven't had a call to use it yet. If people are ok with either a shorter lever, or some thread showing, I'd like to give that one a go.

This is going well. I like having the assortment kits, 'cause I hate being into a quick project, and then having to spend 45min running to the store for a $0.09 screw.

Here's the update spreadsheet.
 

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ttabbal said:
Good point. I should be able to fit a couple of them on the lathe at a time at least. It's a PM1127, and the part is about 6" long, so perhaps 3 at a time, depending..

I have read that stress isn't as big an issue on hot formed material, but I'm unsure how much difference it makes.
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There would also be no issue with leaving centers in one or both ends of the trunion.
That way you could have a longer bar sticking out of the chuck and still support the end properly.
 
I know if i was gonna buy the hardware for my set i was going to buy most that i can from a local hardware store be it tractor supply lowes or HD
 
Would it be fair to ask each person to arrange for the hardware to complete their part? I know there will be several situation where "my part" is a bit nebulous.

Alternatively, I could volunteer to buy the hardware with a little help from my friends.

Which is a good segue in to another point. I think the clamp guys had a good idea with shipping that maximized the "if it fits, it ships" rates. Most of you should be able to fit all 7 of the sets you're making into one box. @ttabal and myself have the large, heavy parts, so that really wouldn't be a thing. I suggest that we each ship a part to @Flyinfool for assembly and testing, and then most of you make up a single box with six parts to mail to either @ttabbal or myself. @ttabbal and I will then be responsible for shipping a kit box to each of you.

So, if I were to get all the hardware, it would be included with the box I sent out.
 
Shotgun said:
Would it be fair to ask each person to arrange for the hardware to complete their part? I know there will be several situation where "my part" is a bit nebulous.

Alternatively, I could volunteer to buy the hardware with a little help from my friends.

Which is a good segue in to another point. I think the clamp guys had a good idea with shipping that maximized the "if it fits, it ships" rates. Most of you should be able to fit all 7 of the sets you're making into one box. @ttabal and myself have the large, heavy parts, so that really wouldn't be a thing. I suggest that we each ship a part to @Flyinfool for assembly and testing, and then most of you make up a single box with six parts to mail to either @ttabbal or myself. @ttabbal and I will then be responsible for shipping a kit box to each of you.

So, if I were to get all the hardware, it would be included with the box I sent out.
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Was the idea for all of us to send all our parts to 1 person for assembly/QC? If that is the case, we are probably better off just having the parts ordered as a group.

I'd be fine putting a few bucks in to "group buy" that hardware.
 
Flyinfool said:
hink that this spindle in real terms will never make 1,000 revoultions in its lifetime, for most of us
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Is there any reason this can't be an aluminum bearing? Wear is not an issue. Just smooth operation without galling.
 
Shotgun said:
Is there any reason this can't be an aluminum bearing? Wear is not an issue. Just smooth operation without galling.
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I was wondering about some sort of delrin or something? I think plastic solid bushings are pretty cheap.
 
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