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WotEver

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Posts posted by WotEver

  1. 1 hour ago, Rick Savery said:

    if I have primed with Zinsser 123, will a standard emulsion still need lots of coats?

    It depends on the paint. Some has lots of pigment and covers well (I’m a fan of Leyland for that), and some goes on like dirty water (I bought some like that from Wilko once). 

  2. 2 hours ago, Jon57 said:

    Also got a Tercoo triple rotating rotary blaster to test out. The sales buff seems good.

    Do not. I’ll emphasise that, DO NOT push hard with the Tercoo. :)

     

    Just rest it on the surface, be patient, wear ear defenders, and let the tool do the work.
     

    If you push hard the tips will break. 

  3. 3 hours ago, Blue Knight said:

    I may need a bigger battery bank?

    Bear in mind that it is the generation of the power used that needs to be the first consideration. There’s no point in having a bunch of batteries that you can’t fully charge. In general terms your battery bank capacity should be at least 3 times your average daily usage. Bigger is better but you firstly have to know that you can generate something like 120% of your daily usage. 

    • Greenie 1
  4. 1 minute ago, Batavia said:

    To be pedantic (before anyone else is), you only need the fundamental and the odd harmonics!

     

    Chris G (who still occasionally uses Fourier Transforms)

    I originally wrote “... third harmonic, fifth harmonic...” but then changed it ‘cos I couldn’t remember if that was right (it was a long time ago). 

  5. 47 minutes ago, mark99 said:

    I read the comnents in I think Screwfix (can't be sure) website which has loads of faq linked to Zinnser supplier who faithfully answered lots and lots of user questions. It's recomnended by Zinnser for spot priming external only (as in  bleeding wood knots etc - Zinnser Bin). Something about being shellac based and not liking expansion. I've used it at home in a house and its great.

    Ah yes, Bin is only for spot priming. My recommendation was for Zinser Coverstain, not Bin. Coverstain is designed for internal and external use and is a full-function primer. Bin is more for covering knots in pine and such like. 

  6. 14 minutes ago, mark99 said:

    I won't using Zinnser after reading fully its limitations. It may break up and crack re external use! (Does not like expansion or contraction).

    Where did you read that Mark? It’s specced for exterior use and I’ve never had it fail in my (admittedly limited) experience. 

  7. 5 hours ago, Jen-in-Wellies said:

    There are higher frequency harmonics in the modified sine wave that can get through to the speakers sometimes.

    Yep. If you draw a sine wave then add the second harmonic over the top, then the third, and keep going... you get a square wave :)

  8. 5 hours ago, Bee said:

    Sanding discs clog too quickly for the initial treatment and if there are traces of bitumen they can melt the old covering and make a right mess.

    Worth pointing out at this juncture that the reason (some) sanders are equipped with variable speed is so that you can select a slow speed such that they won’t heat up and melt the paint you’re attempting to sand. Won’t help an awful lot with already-soft bitumen but it’s worth remembering when keying paint. 

  9. 1 hour ago, waterdog said:

    They should not be used on unrestricted dual carriageways where the speed limit exceeds 50 mph (80 km/h) but if they are used on these dual carriageways...

    Is it just poorly worded or does it really mean that you ‘must not do this, but if you do...’ ?


    And what does the last sentence mean in the context of the preceding?


    Okay, so I went to the Gov site to read what is actually written and that makes far more sense:

     

    These small vehicles travel at a maximum speed of 8 mph (12 km/h). On a dual carriageway where the speed limit exceeds 50 mph (80 km/h) they MUST have a flashing amber beacon, but on other roads you may not have that advance warning (see Rules 36 to 46 inclusive).

  10. 1 hour ago, magpie patrick said:

    Having driven it round the garden several times recently, I think it goes quite fast enough!

    A few years ago the missus was at the building society when two chaps, each on a mobility buggy, were beeping their horns at each other and juggling for who should be at the front of the queue. “Road Rage in the Halifax!” observed the missus. 

  11. 1 hour ago, Murflynn said:

    just to remind folks that you can buy sanding machines that look like angle grinders but rotate at 3,000 rpm.  these are available in 9" and 5" versions.   much safer and can be used for polishing and buffing if needed.

    ^^^^^ This.  Greenie given.  They're also available in 6" (I have one).

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