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Todays Project - What did you do today?

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Todays Project - What did you do today?
TomG Offline
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#4,911
10-12-2017, 06:48 PM
I think it's too far away to help us, Stan. Probably be cheaper just to buy it from McMaster Carr.
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SteveG Offline
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#4,912
10-13-2017, 05:34 AM
(10-12-2017, 06:11 PM)Dr Stan Wrote:
(10-12-2017, 05:04 AM)SteveG Wrote: Nice work Pete.
While stumbling around on local ebay just now I came across a seller in QLD that does short lengths of cast iron round bar. Looks like a metal merchant that's aiming at the hobbyist. Ebay isn't somewhere I'd have looked for it, but certainly convenient for a one-off project that you can wait a few days for.

Steve

Is the name of the seller a state secret?

No, not at all - the seller is micad_eng.
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Dr Stan Offline
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#4,913
10-13-2017, 01:57 PM
(10-12-2017, 06:48 PM)TomG Wrote: I think it's too far away to help us, Stan. Probably be cheaper just to buy it from McMaster Carr.

Your correct as I didn't pay close enough attention to the poster's location.
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f350ca Offline
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#4,914
10-18-2017, 09:45 PM
Wanted some additional tool holders for my QCTP. Machined a 12 inch long blank to cut blocks from.
[Image: 6Q-ijrJSwZoHycf1ktFrtbwsvk9zKtUEogpszqFG...47-h729-no]

Or one really big one.

[Image: WCl4XndpxTCbv6yKnPygzXodaHgMQq-pNo_iXfm3...47-h729-no]
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Pete O Offline
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#4,915
10-18-2017, 10:07 PM
Is that a shop-made toolholder on the shaper Greg?
Lathe (n); a machine tool used in the production of milling machine components.

Milling Machine (n); a machine tool used in the production of lathe components.
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f350ca Offline
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#4,916
10-18-2017, 11:09 PM
One that my uncle made in trade school in the 40's Pete. Takes 1/2 inch cutters. Kind of an interesting design, there are set screws on both sides to clamp the cutter so it can be used right or left handed.
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pepi Offline
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f350ca (10-20-2017)
#4,917
10-19-2017, 08:40 PM
Moving the rest of this post started in new arrivals. Another trip to the bandsaw produced a blank with dimensions. Some lathe work, drilling and boring a hole too 1 5/16 for the bearings.

   

Back to the mill, drilled two 7/16 relief holes in the corners.

   

Again back to the bandsaw for a trim to ruff finish dimensions.

   


Cleaned up for a photo, what's left some finish milling. Drill a hole to be tapped for a set screw that fits a grove in the bearing, preventing the bearing from walking. On the tabs slots for the belt and chain  tension.

   

Greg
Magazines have issues, everything else has problems

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f350ca Offline
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#4,918
10-24-2017, 06:41 PM
Made the first tool holder out of that blank. Needed one wide enough for this thread cutter. Tried milling the shank down but its hard as, a mother in laws heart. A carbide insert end mill made sparks.
[Image: VVOBlPBrOfFrceImA8Pq1SASR_uy0PUcdXFbmvpv...45-h634-no]

Now need to find time to try the cutter. Too busy at other peoples projects, but guess they pay the bills.
Just sprayed an etching primer on this railing, hope to be gone tomorrow.
[Image: ijnB_AwSn5FvEs14GxBtZiAs0vpQ0k8SpH0Hoeac...47-h729-no]
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Mayhem Offline
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#4,919
10-29-2017, 07:02 AM
The neighbour's son races bikes and asked me if I could make up something to adapt a quad piston Brembo caliper to a new rim and disc that he wants to run.  I took the centre to centre bolt hole measurements and a picture of the forks, which I imported into Fusion 360.  A bit of playing and I came up with this:

   
   

I'm a bit disappointed with the radius on the right hand end.  My rotary table has 12mm T-slots but the base is too narrow, so the ones for my mill won't fit.  I used some bolts and cobbled something together that I thought would work, only to have it slip and put a flat spot on there.  Tried to blend it with a file but didn't want to take off too much.  It is now happily deburring in the tumbler.

Other than that I'm happy.  I've told the owner that I strongly advise they take it to an engineer to have it inspected before heading down the back straight, as I don't want to be responsible for him becoming a greasy spot on the armco barrier  Yikes
Hunting American dentists since 2015.
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f350ca Offline
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#4,920
10-29-2017, 08:39 PM
Need a smaller 4 jaw for the Summit, the 16 inch only closes to a little over inch, so have to pad the jaws if I need to cut a metric thread on a small shaft. Found a deal on a Chinese 8 inch, $114, looks reasonable.
Was given a D1-8 backplate, I believe part of a chuck. A little rusty but with some Evaporust and some polishing the taper and pins came up nice.
[Image: 7p1BlfaiDCjf8SnIvzOo-TuudfPujqDm1Bb0ocwj...47-h729-no]

There was a large lump in the middle that needed to be removed. The one surface was hardened, got glowing chips for the first few thou as I was facing it.
[Image: ABsORXIDL8g0srKpJXC7J4a8ZNc_kH1QiGVLHAf1...47-h729-no]

Managed to get a small indexing lip in the bore of the chuck, the back was flat, no index on the outside.
[Image: w-5jnbMlGLdgjxsZfvQEyFcsWJT2z4zjJb8YzfX4...47-h729-no]

Now need to drill and thread the back plate. Will turn some of the OD off but can't quite get to the 8 inch dia of the chuck, I'd be too close to the mounting pins, they're about 7 3/4 on the outside.
Will mount it then grab the chuck body in the big 4 jaw to turn it. The spindle flange is too big to get it down to where I want it.
Free advice is worth exactly what you payed for it.
Greg
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