- Thread starter Kram
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Hood
I am obsessed.
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On my CNC when I am doing the hauler plates I have it flooded. Cast cuts great dry but is also fine wet so I do that as it keeps the mess down and is easier to clean up. I have a fine filter on the coolant so anything that gets back to the tank gets filtered out.
Only thing is if cutting wet you definitely have to clean up or it sets like concrete and is a real pain to remove afterwards
Only thing is if cutting wet you definitely have to clean up or it sets like concrete and is a real pain to remove afterwards
Learn something new every day - I didn't know you could use coolant for cast iron.On my CNC when I am doing the hauler plates I have it flooded. Cast cuts great dry but is also fine wet so I do that as it keeps the mess down and is easier to clean up. I have a fine filter on the coolant so anything that gets back to the tank gets filtered out.
Only thing is if cutting wet you definitely have to clean up or it sets like concrete and is a real pain to remove afterwards
Hood
I am obsessed.
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Weird one today. Was asked to make a cap for a pipe which is used for the drinking water filler on a big Cat.
Couldn't really get in to see exactly what the thread was but it was measuring 43.89mm on the OD and the thread gauges were 2.5mm pitch or 10TPI.
I was thinking either 44mm x 2.5 pitch or 1.75" x 10tpi
Couldn't find anything to match in thread charts so just had to give it a go and luckily it fitted
Shame I only had white Acetal big enough as it can't be kept clean in my hands Then again it is not going to stay white on a fishing boat for long anyway.
Couldn't really get in to see exactly what the thread was but it was measuring 43.89mm on the OD and the thread gauges were 2.5mm pitch or 10TPI.
I was thinking either 44mm x 2.5 pitch or 1.75" x 10tpi
Couldn't find anything to match in thread charts so just had to give it a go and luckily it fitted
Shame I only had white Acetal big enough as it can't be kept clean in my hands
Then again it is not going to stay white on a fishing boat for long anyway.
Kram
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I decided to use aluminium for the outside vent as I have plenty and an AC tig I need practise with. First thing was to find a radius form tool as I dont have a ball turner yet. 1/4" radius tool, makes a big chip and there was no chance of turning it under power, it was starting to chatter just by hand.
Flipped it over with plenty of plastic wrap protection and bored out to 42mm. Finishing my tea then I'll turn the OD and might part a bit off, its a bit long.
Flipped it over with plenty of plastic wrap protection and bored out to 42mm. Finishing my tea then I'll turn the OD and might part a bit off, its a bit long.
Last edited:
Agroshield
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lchris21
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well well well.............every day is a school day!..............I used my eyecrometer in the end. Cheers
dan.taylor.1
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They've messed up Whitworth and bsf/bsc/bsp on there though...
Brad93
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That is impressive.........the worlds most over engineered Olive oil bottle top............struggled to find the thread details in my Zeus book
......think it was BSB, British Standard Bottle ?
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Agroshield
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I have to ask please what you have seen that is incorrect as I could not see anything obvious on BSW and BSF (near the bottom of the page in green). They have the wrong imperial major dia. on BSPP (but correct metric major dia.). Also, I could not see BSC at all (normally denoted BSCy and 60 degree thread angle).
dan.taylor.1
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Just the naming, like that they've called bsf (British standard fine) Whitworth fine and bspt Whitworth pipe tapered, I know most bs threads are derived from Whitworth but I've never seen bspt referred to as a Whitworth thread.
dan.taylor.1
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And I mean British standard coarse by BSC is this not the correct acronym?
Brad93
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It's 55° so technically it is
Agroshield
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Thanks. I was concerned there was something wrong with the numbers. As the site is German, we can perhaps allow them a little slack on the nomenclature.
Initially, when Joe Whitworth standardised the threads, there was no fine series, so there was no need to call them coarse. They were just BSW or British Standard Whitworth. Later, when the fine series was standardised, it was named BSF, British Standard Fine to distinguish it from BSW. It is very similar to the way metric threads are designated - you have ISO metric, which is the standard coarse series and then metric fine.
Sorry I misunderstood your abbreviation. There is yet another obscure British thread, called British Standard Cycle or BSCy. This was used on bicycles and early motorbikes. It has imperial dimensions, is a fine thread for its diameter and is 60 degree vee-angle. I have now found BSCy on the site above, it is under CEI thread (https://www.gewinde-normen.de/en/cei-thread.html). BSCy is sometimes hard to distinguish from BSB, British Standard Brass, which has a number of identical or shared diameter/pitch combinations but is 55 degree vee-angle.
dan.taylor.1
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Yeah I'm aware of the cycle thread, had to repair a few when I was a bike tech as my first job. Every day is a school day, my grandad says if you don't learn something new every day you weren't paying attention.
Lewis_RX8
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Making a die holder at the moment for a training piece
The lecturer liked my two nuts together trick for how to sharpen drill bits that works on big or small ones just as good
Still getting better at the sharpening as I go but Intresting doing it on 24mm drills not the 10mm or so I'm used to doing
The lecturer liked my two nuts together trick for how to sharpen drill bits that works on big or small ones just as good
Still getting better at the sharpening as I go but Intresting doing it on 24mm drills not the 10mm or so I'm used to doing
