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Type: Posts; User: mattjm

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  1. Replies
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    My statement was : "Sometimes the chinese...

    My statement was :

    "Sometimes the chinese knockoff stuff is actually perfectly functional, and if I buy it for half the price of the "good" brand but it lasts 75% as long, I'm still coming out...
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    Uploaded pics were scaled down quite a bit. Full...

    Uploaded pics were scaled down quite a bit. Full resolution versions at:

    http://mattjm.com/img/hvac/

    Gives you a better idea of the finish.
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    Full size pictures as promised. First one is the...

    Full size pictures as promised. First one is the CT-806 (eccentric reamer). Reamer works well--it has the clutch to stop tightening at a certain point, but it doesn't have a ratchet. The tubing...
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    Manufacturing in China is really interesting. ...

    Manufacturing in China is really interesting. They're perfectly capable of making quality products if you spec everything out and have someone travel over there to make sure they're actually doing...
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    I bought the flaring tools first and they were...

    I bought the flaring tools first and they were satisfactory, so I decided to try the hoses. Part of my reason for buying their tools was that there is *zero* first-hand information about them...
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    CBI tools review

    I thought I'd post some info about CBI tools. They're sold by an outfit called "northwaysmachinery" on eBay, and they're sort of Harbor Freight for HVAC tools. I know the value of good tools (I...
  7. This looks like exactly what I need. Thanks! ...

    This looks like exactly what I need. Thanks!

    Matt
  8. condensate traps on negative pressure coil heat pumps

    Here in the Pacific Northwest we'll run heating only mode for 7-8 months out of the year.

    A conventional p-trap will dry out in no time and stay that way, so if my drain is running to a condensate...
  9. Thread: Make a fan

    by mattjm
    Replies
    9
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    715

    They work great and they're quiet, just remember...

    They work great and they're quiet, just remember to salvage the run cap (if present), too.
  10. Thread: Time sheets

    by mattjm
    Replies
    2
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    461

    Company you own or company you work for? I...

    Company you own or company you work for?

    I just ordered a nexus 7 tablet for my business (one man shop) and trying to figure this out as well.

    "freshbooks" has a time tracking feature but I...
  11. I don't use the hydrocarbon replacements in any...

    I don't use the hydrocarbon replacements in any jobs due to the insurance issue. I do use the ES R-12 replacement in my personal vehicle (I'm already carrying around 15 gallons of gasoline...I can't...
  12. Thread: Bad pucky

    by mattjm
    Replies
    7
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    887

    Maybe just mix it better? Try a paint mixer and...

    Maybe just mix it better? Try a paint mixer and a drill. If you pour the moisture off the top you're going to end up with a dry mix (clumpy sounds right).

    I don't think the stuff is...
  13. Thread: Bad pucky

    by mattjm
    Replies
    7
    Views
    887

    Did you try mixing it back up? I think it's...

    Did you try mixing it back up? I think it's water-based, so it may settle out (not unlike latex paint that sits for a while).
  14. Replies
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    Another question: Is there going be a thin film...

    Another question: Is there going be a thin film of oil inside all the tubing? Does that present a problem when brazing? I will be sweeping nitrogen.
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    Tinkering with a portable room AC

    Hi folks,

    Hopefully this is the right forum for this--please move with my apologies if not.

    I'm currently in residential HVAC school but I do a lot of tinkering for fun so I have a little...
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    I would hesitate to use that. According to the...

    I would hesitate to use that. According to the MSDS it's mostly acetone:

    http://www.crcindustries.com/faxdocs/msds/2185.pdf

    Depending on what kind of plastics are in your gauge, the acetone...
  17. Sticky: I'm going through the residential HVAC program at...

    I'm going through the residential HVAC program at the local community college, mostly because it's interesting. I've always tinkered with furnaces in my house, and I installed a heat pump in my...
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    Are all aerosol solvents restricted? I used this...

    Are all aerosol solvents restricted? I used this on my Supco VG64:

    http://www.amazon.com/CRC-Electrical-Contact-Cleaner-Aerosol/dp/B003NTQCA2

    If it's available, it should be at your local auto...
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