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ChrisLilley
Joined: 01 May 2010
Posts: 680
Location: Nice, France (I'm British)
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 Posted: Mon Mar 14, 2011 5:16 am Post subject: Found: aluminium block with some tapped holes |
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I find myself in need of a custom join-it-all-together plate, which will connect a Newport 460 XYZ block with a long arca-swiss style clamp.
Basically a slab of aluminium, 90 x 80 x 15mm, with four holes tapped 1/4" 20 to bolt to the Newport and two countersunk holes flush 1/4" to bolt to the AS clamp.
I would welcome suggestions of places to have this made (or offers to make it, along with projected costs). I can describe the specific hole positioning and spacing in more detail on request.
Last edited by ChrisLilley on Tue Mar 29, 2011 3:36 pm; edited 1 time in total |
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SONYNUT
Joined: 22 Jan 2011
Posts: 633
Location: Minnesota USA
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| Posted: Mon Mar 14, 2011 5:37 am Post subject: |
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draw it up and I can machine it...around 20 usd
i'm guessing you need something like this?
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Chris S.
Site Admin
Joined: 05 Apr 2009
Posts: 2997
Location: Ohio, USA
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| Posted: Mon Mar 14, 2011 9:33 am Post subject: |
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Don Wilson, the fabricator whose contact info is in the link in my signature below, makes this kind of thing for me all the time, and is happy to work long distance. The price is always reasonable.
Not to take away from Sonynut's offer, which is a good one. But if that doesn't work out for whatever reason, Don Wilson can take care of you. Depending on which stage it is, I might even have one in hand to show him (he's only a few minutes away from me). And if so, he's already made such a plate for this stage.
--Chris
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ChrisLilley
Joined: 01 May 2010
Posts: 680
Location: Nice, France (I'm British)
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| Posted: Mon Mar 14, 2011 10:43 am Post subject: |
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Sonynut, Chris, thanks for the replies. I'm working on a scale diagram.
I have both of the items in-hand (the RRS B2-Pro/L 80mm clamp I have had for a while, and the Newport arrived this morning).
I would probably want to order the requisite Imperial bolts at the same time. Partly because they are difficult to get over here in metric-only Europe and partly because the thickness of the adapter depends to some extent on the lengths of the bolts. |
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ChrisR
Site Admin
Joined: 14 Mar 2009
Posts: 7721
Location: Near London, UK
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| Posted: Mon Mar 14, 2011 10:54 am Post subject: |
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I think you might be very popular 
I'll prepare a list... |
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SONYNUT
Joined: 22 Jan 2011
Posts: 633
Location: Minnesota USA
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| Posted: Mon Mar 14, 2011 2:23 pm Post subject: |
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| ChrisLilley wrote: |
I would probably want to order the requisite Imperial bolts at the same time. Partly because they are difficult to get over here in metric-only Europe and partly because the thickness of the adapter depends to some extent on the lengths of the bolts. |
1/4" 20 threaded i would guess
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ChrisR
Site Admin
Joined: 14 Mar 2009
Posts: 7721
Location: Near London, UK
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| Posted: Mon Mar 14, 2011 4:09 pm Post subject: |
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1/4" x 20 is very easily available in the UK, as Whitworth or UNC.
Plenty on ebay too, e.g cap head screws. ("Allen bolts") |
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ChrisLilley
Joined: 01 May 2010
Posts: 680
Location: Nice, France (I'm British)
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| Posted: Mon Mar 14, 2011 4:46 pm Post subject: |
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Here is what I had in mind. The plate is 3.5 inch (88.9mm) by 80mm.
The four holes to attach to the newport are on one inch centres in the Y dimension and three inch centres on the X dimension and tapped 1/4" 20.
The two holes to attach to the RRS clamp are on 45mm centres and allow a 1/4" bolt to pass, with the bolt head flush once fitted. I don't know the diameter or slope of the countersink, it depends on what the bolt uses.
Similarly the depth depends on how long the bolts are.
For reference here is a drawing of the Newport 460 XYZ. The dimensions labelled A, B, C are 1/4", 0.5" and 1" respectively.
The base plate is 6.3mm deep and the countersunk holes seem to be for cylindrical-headed bolts with 7mm or less diameter of the bolt head.
Image credit: Newport |
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SONYNUT
Joined: 22 Jan 2011
Posts: 633
Location: Minnesota USA
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| Posted: Mon Mar 14, 2011 7:19 pm Post subject: |
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no problem..1/2" thick ok?
as for hardware.(and just about anything)..check out http://www.mcmaster.com
they are the best
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ChrisLilley
Joined: 01 May 2010
Posts: 680
Location: Nice, France (I'm British)
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| Posted: Tue Mar 15, 2011 4:55 am Post subject: |
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| SONYNUT wrote: | | no problem..1/2" thick ok? |
| ChrisLilley wrote: |
Similarly the depth depends on how long the bolts are.
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... and I didn't know what lengths bolts come in. But thelink below indicates 1/2"bolts are widely available, should be right?.Or is that too long?
Thanks for the link. OK so I found some flush bolts that are 1/2" long including cap that look like they would suit (I don't kow anything about the grades of steel or the various specs). And the head on them is
Head Diameter
.531"
Head Height
.161"
Undercut Head
No
Head Angle
82°
Does that give enough info to cut the countersink for the two holes that attach to the arca plate?
The heads on the plain cap ones seem to be wider (3/8") than the countersunk cutout on the Newport .... checks ... no, should be okay.
Now to see what happens when I enter a French address and ask for shipping. Accepted, 'applicable' (but undisclosed) shipping will be added. Okay, hopefully I have bolts now. |
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SONYNUT
Joined: 22 Jan 2011
Posts: 633
Location: Minnesota USA
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| Posted: Tue Mar 15, 2011 5:04 am Post subject: |
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1/4 20 machine/allen bolt head is about 5/16'
your arca uses 1/4 20 bolts then ,correct?
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ChrisLilley
Joined: 01 May 2010
Posts: 680
Location: Nice, France (I'm British)
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| Posted: Tue Mar 15, 2011 5:46 am Post subject: |
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| SONYNUT wrote: |
your arca uses 1/4 20 bolts then ,correct? |
Yes.
More precisely it has a single central 3/8 hole, which I don't plan to use and is not indicated on my sketch, plus two 1/4 20 holes which I will use. These are on 45mm centres and symmetric over the 80mm length of the clamp. Which is why I made the adapter plate 80mm. |
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SONYNUT
Joined: 22 Jan 2011
Posts: 633
Location: Minnesota USA
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| Posted: Tue Mar 15, 2011 6:12 am Post subject: |
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if you could just reach out and touch it... 
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ChrisLilley
Joined: 01 May 2010
Posts: 680
Location: Nice, France (I'm British)
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| Posted: Tue Mar 15, 2011 6:26 am Post subject: |
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| SONYNUT wrote: |
if you could just reach out and touch it... |
Coolness!
Since the bolts there obviously fit, if you could let me know how much for the whole thing with the piece and the bolts and shipping to France. |
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SONYNUT
Joined: 22 Jan 2011
Posts: 633
Location: Minnesota USA
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| Posted: Tue Mar 15, 2011 7:21 am Post subject: |
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it's on the way with bolts
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Last edited by SONYNUT on Tue Mar 29, 2011 5:54 pm; edited 1 time in total |
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