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wombat2go
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wombat2go
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05-09-2016
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05:21 PM
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Today,
04:09 PM
wombat2go
replied to a thread
Overhead lights for lathe...
in
General
I have incandescent floodlight over right shoulder. Works OK, except the compound angle grads on the SB9A are at rear in shadow. So some rear fill...
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6 replies | 73 view(s)
09-22-2017,
07:05 PM
wombat2go
replied to a thread
OT: SSD versus hard drive.
in
General
Yes, I use ssd sata as root media and it is faster for photo work and data heavy numerical calcs. I use other ssd and spinning drive for backup,...
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36 replies | 1599 view(s)
09-22-2017,
06:58 PM
wombat2go
replied to a thread
OT - tree huggers dilemma with old incandescent bulbs
in
General
Black Chrome plating has a high emissivity (high absorbtivity) over the solar spectrum. It also has a low emissivity around the spectrum of a body...
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123 replies | 4720 view(s)
09-21-2017,
08:49 PM
wombat2go
replied to a thread
Welding near bearings
in
General
Hi Grimm, If I understand your photo of post #7 , the (outer) tube will be welded to the frame later? And that will involve heat affected zone...
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16 replies | 701 view(s)
09-21-2017,
07:36 PM
wombat2go
replied to a thread
O/T: Calling Australia is expensive. I had no idea.
in
General
I did a brief visit to Australia last week. A glass of beer and a litre of petrol (gasoline) are about 3 X the price of here in Michigan, as the...
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17 replies | 1006 view(s)
09-04-2017,
09:56 AM
wombat2go
replied to a thread
Advice needed drilling long hole
in
General
Can you use DOM 1 inch OD by 0.5 inch ID?...
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10 replies | 975 view(s)
09-03-2017,
06:39 PM
wombat2go
replied to a thread
heat sink fins
in
General
If the thermal joint is also current carrying, excess compound can be a problem. The hockey puks in range 3000 to 5000 Amp (56~77mm) are clamped...
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38 replies | 2073 view(s)
09-03-2017,
04:17 PM
wombat2go
replied to a thread
GX-16 round pin connectors where to get?
in
General
Looks like Amazon has at least some of your pin numbers on 2 day delivery.
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5 replies | 358 view(s)
09-03-2017,
11:16 AM
wombat2go
replied to a thread
heat sink fins
in
General
Hi Darryl, I agree with aostling, they would perform and look better if machined from solid 6031. The parting tool could be used to create the...
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38 replies | 2073 view(s)
09-02-2017,
03:22 PM
wombat2go
replied to a thread
slotting on a lathe
in
General
Was the tool solidly fixed to the plunger bar, or is it hinged like a shaper clapper box? I could really use such a slotting attachment on the...
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12 replies | 995 view(s)
09-02-2017,
09:54 AM
wombat2go
replied to a thread
Grandson in the shop
in
General
This year my 12 yo did a summer camp organised by local non-profit at Kettering U. The couse was 1.5 hrs of stem followed by 1.5 hours of basketball...
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6 replies | 900 view(s)
09-01-2017,
02:25 PM
wombat2go
replied to a thread
OT time clock alarm/horn ideas
in
General
If there is a linux box running, hooked to a stereo, as I have here, use cron This example would play an earsplitting warble at 0900 and 1900,...
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45 replies | 2516 view(s)
08-25-2017,
09:38 AM
wombat2go
replied to a thread
OT: Babylonian trig table: nearly 4000 years old
in
General
There is complicated trigonometry in the testing and correction of revenue metering potential and current transformers to their actual burden...
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22 replies | 1734 view(s)
08-24-2017,
10:55 PM
wombat2go
replied to a thread
OT: Microwave oven mystery
in
General
The old klystron was a more complicated and lower power device compared to the magnetron and with somewhat adjustable frequency. About 50 years ago...
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21 replies | 1375 view(s)
08-24-2017,
09:13 PM
wombat2go
replied to a thread
OT: Microwave oven mystery
in
General
Hi Paul, For your post 2, a magnetron is only an active thermionic device and can not resonate until all 3 of the following are present: Magnetic...
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21 replies | 1375 view(s)
08-24-2017,
08:01 PM
wombat2go
replied to a thread
OT: Microwave oven mystery
in
General
Any of the speculation about the cause may be the one. I suggest to use an FM receiver with isolated balanced FM antenna terminals. Take the...
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21 replies | 1375 view(s)
08-22-2017,
10:52 PM
wombat2go
replied to a thread
OT, Crazy "springy copper" electric cord wire
in
General
I am not sure, but doubt that BeCu would have been used in consumer wire for computers etc, The Be was listed as toxic in many countries since...
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24 replies | 1755 view(s)
08-19-2017,
11:22 PM
wombat2go
replied to a thread
Mazda's Skyactiv-X engine
in
General
Yes, that was one problem. The Mazda RX2 I owned in Australia in 1971 was rated as 1100 cubic centimetre displacement, but had a dual barrel...
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47 replies | 3939 view(s)
08-19-2017,
10:00 AM
wombat2go
replied to a thread
Mars rover fastener, revisited
in
General
Thanks to Dodd for the interesting info. I sometimes work on the vintage camera parts and the JIS flat countersunk heads are one example where...
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47 replies | 3501 view(s)
08-19-2017,
09:45 AM
wombat2go
replied to a thread
Repairing Extension Cord Ground Pin
in
General
(By the way) For those needing NFPA 70 ( NEC) free access to latest edition, , it is available after creating a user account with NFPA...
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42 replies | 3473 view(s)
08-19-2017,
08:57 AM
wombat2go
replied to a thread
Repairing Extension Cord Ground Pin
in
General
Here is an OSHA page about repairing cords, (letter) https://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=INTERPRETATIONS&p_id=27353...
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42 replies | 3473 view(s)
08-17-2017,
10:21 PM
wombat2go
replied to a thread
OT - thread id help
in
General
As I understand, you have a male thread to identify -? Sometimes I have had to identify vintage camera threads. I have used the vintage Bausch and...
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19 replies | 1437 view(s)
08-16-2017,
08:51 PM
wombat2go
replied to a thread
Two to three point contact tip from Steve Barton / Viperspit
in
General
The lathe dog is free to displace radially If anybody can give me the holder OD, bore, the end mill shank OD, and the approximate thread and ...
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29 replies | 2149 view(s)
08-16-2017,
10:03 AM
wombat2go
replied to a thread
Two to three point contact tip from Steve Barton / Viperspit
in
General
The vee drive inboard boat I had, used a 1.125 inch stainless shaft. the coupling at the gearbox was keyed and split. The 'horizontal' Unbrako...
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29 replies | 2149 view(s)
08-15-2017,
08:10 AM
wombat2go
replied to a thread
Electronic circuit question
in
General
What about a self extracting vent? http://www.homedepot.com/b/Heating-Venting-Cooling-Ventilation-Attic-Fans-Vents-Wind-Turbine/N-5yc1vZc665 No...
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30 replies | 1993 view(s)
08-13-2017,
02:43 PM
wombat2go
replied to a thread
Basketball hoop extra hold-downs
in
General
Hi Millwrong, Yes, I looked at the permanent types. They cost over $1200 for the kit, also here the concrete footing is extra, has to be 42 inch...
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2 replies | 237 view(s)
08-13-2017,
01:07 PM
wombat2go
started a thread
Basketball hoop extra hold-downs
in
General
We recently set up the new portable basketball hoop. It is certainly getting a lot of use. It is fairly well built and the tank and wheels hold...
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2 replies | 237 view(s)
08-12-2017,
04:46 PM
wombat2go
replied to a thread
Turn a Drill Press into a Dedicated mill?
in
General
Hi Planloss, I made an A frame brace for locking the quill. This significantly reduced the "nodding donkey", and increased the stiffness in both...
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32 replies | 2540 view(s)
08-12-2017,
01:32 PM
wombat2go
replied to a thread
Heating up a rusted joint?
in
General
Thanks for adding the good news. I have had success with acetone on tiny screws on vintage cameras.
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30 replies | 2978 view(s)
08-11-2017,
11:10 AM
wombat2go
replied to a thread
Tell me about automatic transmission fluid please.
in
General
I had a 1972 RX2 That was before they were reliable. I had 2 rebuilds due to warped and scored chambers and on the third failure had to take the...
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51 replies | 5368 view(s)
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