Page 4 of 5 FirstFirst 12345 LastLast
Results 46 to 60 of 67
  1. #46
    Join Date
    Jan 2011
    Location
    Far West Wimmera
    Age
    63
    Posts
    4,049

    Default

    My experience is that windscreen washer pumps are designed for very short runs only. I have a pond pump on my band saw. Has been running for a couple of years. It has only had one cleanout when I changed to a new coolant. I have a relatively coarse filter (90mm rainwater seive) with a magnet in it, that the coolant runs across and another magnet in the bottom of the container. It work fine still.

    Dean

  2. #47
    Join Date
    Feb 2015
    Location
    Oz
    Age
    73
    Posts
    459

    Default Head height

    Depending on where it will be situated head height is all important, although as it is listed at 3m that should be ample. It also doesn't say what type of pump it is: gear impeller, diaphram, wet, dry?
    I prefer dry pumps now simply because when you want to service them you don't have to fish around in the bottom of the coolant container to find them and then spend time cleaning all the gunk off them.
    Wish I had the same luck with pond type pumps as Oldneweng, unfortunately I went through a few on the bandsaw so now only use dry gear pumps where the rotor doesn't come in contact with fine swarf. On the lathe I use a standard dry impeller type pump. Whilst the magnetic rotor is, to a degree, open to swarf collection I've not had a problem. Not so when I used this type pump on the bandsaw, despite using a number of inline gauze, wire and magnetic filters the rotor still gummed up frequently and eventually stuffed the pump!

  3. #48
    BobL is offline Member: Blue and white apron brigade
    Join Date
    Feb 2006
    Location
    Perth
    Posts
    7,183

    Default

    Before hitting the "buy" button on eBay I decided to have one more look at the pump.

    It was bastrard to get completely apart because the motor fan and the impeller were hard pressed onto knurled motor shaft ends but a bit of heat and pliers got them off

    What I found was the rubber seal between the two body parts was not leaking.
    What was leaking was rubber seal about 5mm thick around the shaft behind the impeller and this turned out to be was sloppy/worn.
    The rubber seal was moulded into the plastic so could not be replaced but fortunately there was a groove in the inner bore of the seal and it was just big enough to tight fit a small Viton O-ring.
    So I put one O-ring in the groove and one behind and one in front of the seal.

    It's been running for 20 minutes - no leak. If it does eventually leak hopefully I can just replace the O-rings.

  4. #49
    BobL is offline Member: Blue and white apron brigade
    Join Date
    Feb 2006
    Location
    Perth
    Posts
    7,183

    Default

    The pump I've had trouble with has been running fine but there have been innumerable small leaks from the return side of the system. Some of these leaks were in the length of gutter employed to catch the coolant as it dribbles off the work and blade and these have been fixed.
    The other common leak is when cutting tubing and coolant enters the tube and runs out of the ends - these are managed with small plastic buckets.
    However, inevitably the coolant finds other pathways somewhere else across the bed of the saw so that it misses the length of gutter and the dribbles onto the floor - I have over the years placed various sheet metal strips and silicone beads onto the bed of the saw to create barriers that divert the coolant back towards the gutter.

    Yesterday one of the larger silicone dams leaked which dumped about half my coolant during a long unattended cut. On inspection of the other silicone beads they are all now weeping I'm fed up with this and am now looking at a catch all tray underneath the entire saw bed/base. I know that some members have rebuilt the support frame but has anyone else built a catch all tray for their saw?

    Thanks

    PS Have since found a picture of a tray and frame by Weldermick but maybe there are others?
    Have also dug out a SS tray with 15mm high sides that might do the trick.

  5. #50
    Join Date
    Jan 2011
    Location
    Far West Wimmera
    Age
    63
    Posts
    4,049

    Default

    Quote Originally Posted by BobL View Post
    The pump I've had trouble with has been running fine but there have been innumerable small leaks from the return side of the system. Some of these leaks were in the length of gutter employed to catch the coolant as it dribbles off the work and blade and these have been fixed.
    The other common leak is when cutting tubing and coolant enters the tube and runs out of the ends - these are managed with small plastic buckets.
    However, inevitably the coolant finds other pathways somewhere else across the bed of the saw so that it misses the length of gutter and the dribbles onto the floor - I have over the years placed various sheet metal strips and silicone beads onto the bed of the saw to create barriers that divert the coolant back towards the gutter.

    Yesterday one of the larger silicone dams leaked which dumped about half my coolant during a long unattended cut. On inspection of the other silicone beads they are all now weeping I'm fed up with this and am now looking at a catch all tray underneath the entire saw bed/base. I know that some members have rebuilt the support frame but has anyone else built a catch all tray for their saw?

    Thanks

    PS Have since found a picture of a tray and frame by Weldermick but maybe there are others?
    Have also dug out a SS tray with 15mm high sides that might do the trick.
    You could have a look at my rebuild thread Bob.

    //metalworkforums.com/threads/1...hlight=bandsaw

    Dean

  6. #51
    BobL is offline Member: Blue and white apron brigade
    Join Date
    Feb 2006
    Location
    Perth
    Posts
    7,183

    Default

    Quote Originally Posted by Oldneweng View Post
    You could have a look at my rebuild thread Bob.

    //metalworkforums.com/threads/1...hlight=bandsaw

    Dean
    Thanks Dean, for some reason your photos aren't visible?

  7. #52
    Join Date
    Jan 2004
    Location
    Mackay North Qld
    Posts
    6,446

    Default

    Quote Originally Posted by BobL View Post
    The pump I've had trouble with has been running fine but there have been innumerable small leaks from the return side of the system. Some of these leaks were in the length of gutter employed to catch the coolant as it dribbles off the work and blade and these have been fixed.
    The other common leak is when cutting tubing and coolant enters the tube and runs out of the ends - these are managed with small plastic buckets.
    However, inevitably the coolant finds other pathways somewhere else across the bed of the saw so that it misses the length of gutter and the dribbles onto the floor - I have over the years placed various sheet metal strips and silicone beads onto the bed of the saw to create barriers that divert the coolant back towards the gutter.

    Yesterday one of the larger silicone dams leaked which dumped about half my coolant during a long unattended cut. On inspection of the other silicone beads they are all now weeping I'm fed up with this and am now looking at a catch all tray underneath the entire saw bed/base. I know that some members have rebuilt the support frame but has anyone else built a catch all tray for their saw?

    Thanks

    PS Have since found a picture of a tray and frame by Weldermick but maybe there are others?
    Have also dug out a SS tray with 15mm high sides that might do the trick.

    BobL

    If you are talking a 4 x 6" horizontal saw, I think I might be able to help.
    My 4" x 6" sits on an angle section frame which supports a S/steel baking tray which is mounted underneath the angle section on a slide.

    Fixed to the angle frame under the saw blade line are some stainless steel gutters which drop into the baking pan.

    When used I the horizontal mode these gutters catch coolant drips and saw chips (when I use the saw dry )

    It took a few templates to get the shape right and some extra farnarcling around to shape the gutters which are under.5mm sheet thickness.

    I can take some pics with my iPod and post tomorrow with some dimensions if we are talking about the same thing.

    Grahame

  8. #53
    BobL is offline Member: Blue and white apron brigade
    Join Date
    Feb 2006
    Location
    Perth
    Posts
    7,183

    Default

    Quote Originally Posted by Grahame Collins View Post
    BobL

    If you are talking a 4 x 6" horizontal saw, I think I might be able to help.
    My 4" x 6" sits on an angle section frame which supports a S/steel baking tray which is mounted underneath the angle section on a slide.

    Fixed to the angle frame under the saw blade line are some stainless steel gutters which drop into the baking pan.

    When used I the horizontal mode these gutters catch coolant drips and saw chips (when I use the saw dry )

    It took a few templates to get the shape right and some extra farnarcling around to shape the gutters which are under.5mm sheet thickness.

    I can take some pics with my iPod and post tomorrow with some dimensions if we are talking about the same thing.

    Grahame
    Pics would be good.
    Thanks

  9. #54
    Join Date
    Jan 2004
    Location
    Mackay North Qld
    Posts
    6,446

    Default Bandsaw tray & Gutters Pics

    Hi Bobl,
    As promised, here are iPod pics of the tray and gutters fitted to the BS4A.


    I'll do the measurements later on when it stops raining- the shed is apart from the house.

    I have 't had flood coolant on the saw as yet, just that from a squirty bottle or spray can lube .

    The gutters and tray catch all of that. I have yet to do something about a catch tray for working in the vertical mode where the droppings fall back through the slotted blade plate.


    BS4A Tray & Gutters.jpgLHS Gutter.JPGRHS Gutter.JPG
    If you like the idea I'll post the dimensions after the rain stops.

    Grahame

  10. #55
    BobL is offline Member: Blue and white apron brigade
    Join Date
    Feb 2006
    Location
    Perth
    Posts
    7,183

    Default

    Thanks Grahame,

    Your set up will fix some on my dribbles but not all of them. What I've found on the occasional long cut is that enough coolant ends up all over the top of he saw base so that it starts to dribble off the top of the base in almost every direction. I blocked up any holes on the top of the base and put a little extra gutter across the back of the base as some others have done but then it started coming off the non-cutting side. To get around this I figure placing the whole thing inside a tray that covers the entire base is the way to go.

  11. #56
    Join Date
    Feb 2015
    Location
    Oz
    Age
    73
    Posts
    459

    Default Stopping the dribbles.

    I have the BS5S so this may not help; however, you may be able to modify some of the ideas to better suit your machine.


    My system runs from a small geared pump (dry) and feeds in a continual loop from coolant tub (an old 1kg shellac container) to pump onto takeoff junction and back to coolant tub. The coolant feed to the blade is from the take off junction you see beneath the coolant nozzle controlled by the tap you can see at the coolant nozzle tip.


    To stop coolant leaking everywhere I fabricated a piece of sheet metal to the same shape as the metal foot at the base of the rear blade guide then cut an inner tube to the same shape and inserted it between the two pieces of metal, this stops the coolant from travelling with the blade and dripping onto the floor.


    I drilled two holes in the swivel plate to stop coolant build up and attached a small section of ally to the side of the swivel plate. Under the vice I added a small plastic tray to catch any coolant dripping through the vice. I drilled a hole through the table base and inserted a drain I turned up and this returns coolant to the coolant tub via a filter.


    The filter is a common Bunnings retic fitting with an extra bit added that hold REMs to catch anything that gets past the retic fitting. The retic filter has to be cleaned fairly often as the build up of very fine swarf is incredible - not much gets through to the magnets.


    I’ve been running this system for over a year now and provided I empty the retic filter regularly I have no problems. If not the coolant return blocks and the coolant overflows the table.


    I don’t think there is much you can do about the coolant running the length of the tube being cut and dripping on the floor other than positioning a bucket underneath as you already do.

    Hope there is something you can use there.
    Attached Images Attached Images

  12. #57
    Join Date
    Jul 2010
    Location
    Melbourne
    Posts
    9,088

    Default

    Hi Bob,
    Awhile a full tray would be nice, how about jacking the front legs up 1"?(or the back)

    Stuart

  13. #58
    BobL is offline Member: Blue and white apron brigade
    Join Date
    Feb 2006
    Location
    Perth
    Posts
    7,183

    Default

    Quote Originally Posted by Stustoys View Post
    Hi Bob,
    Awhile a full tray would be nice, how about jacking the front legs up 1"?(or the back)
    Stuart
    Yep I have tied that (especially for tube so it's dribbling out of only one end) and it even works for that particular cut but then it ends up dribbling off somewhere else.
    These are the main dribble points.
    The zigzags are where I have silicone beads acting as dams plus I had a gutter over the back as well.


    This one happened when I lifted the back of the base up to prevent dribbles off the back of eh base - it was wicking along the bottom edge of the cast iron base and then choosing to drop off at this point.
    Attached Images Attached Images

  14. #59
    Join Date
    Jan 2011
    Location
    Far West Wimmera
    Age
    63
    Posts
    4,049

    Default

    Quote Originally Posted by BobL View Post
    Thanks Dean, for some reason your photos aren't visible?
    Sorry about that Bob. I noticed there was only links, but did not try the links.

    There appears to be no pictures in my "Manage Attachments".

    As I had a crash with my Network Hard drive early this year, I have probably lost a lot of these pictures. I have several thousand pictures recovered from the hard drive, but these are only listed by numbers. I am sorting them.

    If all else fails I will take some more.

    Dean

  15. #60
    BobL is offline Member: Blue and white apron brigade
    Join Date
    Feb 2006
    Location
    Perth
    Posts
    7,183

    Default

    Quote Originally Posted by Oldneweng View Post
    . . . . If all else fails I will take some more.

    Dean
    Thanks

Page 4 of 5 FirstFirst 12345 LastLast

Similar Threads

  1. Impeller for coolant pump - Am I dreaming?
    By bangbang in forum METALWORK GENERAL
    Replies: 4
    Last Post: 24th Mar 2014, 07:57 AM
  2. El cheapo coolant removal pump
    By Grahame Collins in forum METALWORK GENERAL
    Replies: 19
    Last Post: 15th Mar 2012, 01:20 PM
  3. Coolant Pump
    By electrosteam in forum METALWORK - Machinery, Equipment, MARKET
    Replies: 0
    Last Post: 5th Nov 2010, 06:25 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •