Order metal spacers to McMaster

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Re: Order metal spacers to McMaster

Postby jammer » Thu Sep 26, 2013 5:02 am


Are the aluminum spacers that are on the Inventables (https://www.inventables.com/technologie ... um-spacers) site the same ones that you used to sell on the makerslide site. Will they still fit the 5mm screw without having to be drilled to be .196 in ID?

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Re: Order metal spacers to McMaster

Postby Digitalmagic » Tue Oct 01, 2013 9:05 am

For 5mm screw, hole #12 is required, I think.

Found 2 suppliers for 1/4" length, 3/8" OD #10 hole probably shipping worldwide. It is aluminum, not stainless steel.
http://aluminumspacers.com%20 > .4$ (go%20for%20#AS38-10-16)
http://www.alliedelec.com/search/productdetail.aspx?SKU=70211084 > .5$
http://www.widgetco.com/12-by-1-4-inch-aluminum-spacers > .58$

And inventables, already indicated here:
https://www.inventables.com/technologies/aluminum-spacers 25312-13 << #12 hole

I plan to order some stainless spacer (http://www.mcmaster.com/#92320a230/=oqsiyc). << #12 hole
I could place a larger order and reship from Europe, if many could be interested in getting some.
Human has 20 nail ... extruders.
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Re: Order metal spacers to McMaster

Postby cvoinescu » Tue Oct 01, 2013 11:51 am

I got #10 spacers from aluminumspacers.com in the hope that they would fit -- they don't, they're very precisely 0.192" ID. However, they do some metric sizes now, so it doesn't hurt to ask them -- I'm not sure what their minimum order quantities are.

I have 1/4" and 1" M5 spacers (5.1 mm ID, 8 mm OD) in my store (store.amberspyglass.co.uk). Shipping such small bits is fairly cheap, even to the US.
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Re: Order metal spacers to McMaster

Postby jammer » Wed Oct 02, 2013 4:56 am

I ended up ordering a whole set of replacement stainless steel spacers from McMaster. Here are the part numbers and links:

V-Wheel spacers: 92415A742 http://www.mcmaster.com/#catalog/119/3229/=or7kup

Motor spacers: 92320A212 http://www.mcmaster.com/#92320a212/=or7lm9

not sure where these go but I ordered them since they were on the BOM: 92320A213 http://www.mcmaster.com/#92320a213/=or7m2t

I got them yesterday and the V-Wheel spacers do in fact fit what I presume are the #10 screws that came on my RRP kit. I went ahead and ordered new spacers since a few of my nylon spacers that came with the kit were tightened so much that I could tell with just an eyeball that the v-wheels were sitting at an angle. The new stainless spacers are a larger OD but they are about the same OD as the nuts so I don't think it will be an issue on the bearings. I installed them this evening and I really like how solid the v-wheels feel. The spacers fit perfectly on the screws. Here are a few pics.



Some of the bearing I got in the kit seem like they are a little easier to rotate than some of the other bearings. Is this normal?
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