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  1. #31
    Join Date
    Sep 2005
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    Hobart
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    44
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    Nah, still in the land of the free...

    I have been meaning to get back on here, but a combination of too much work and lack of ability to do any real shed-type activities here (as I am still in an apartment) has discouraged me from getting back on.

    However, now I have a few projects and possibly even the tools to do them, so I might get back on properly.

    If nothing else, it will give me something better to do than watch reruns on TV... Oh, and talk to a few more people who understand sarcasm.

    Thanks for the welcome!

    Cam
    <Insert witty remark here>

  2. #32
    Join Date
    Jul 2005
    Location
    Oberon, NSW
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    64
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    Good to hear from you again!

    Correct me if I'm wrong... but you don't need a shed to make up castings. Just think of the stockpile of blanks you could have cured & ready for working by the time you're tooled up again.
    I may be weird, but I'm saving up to become eccentric.

    - Andy Mc

  3. #33
    Join Date
    Feb 2006
    Location
    Lindfield N.S.W.
    Age
    63
    Posts
    1,644

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    Great to hear from you again, Cameron.
    Good luck with shed activities? Does you apartment have a LUG? If so, you have a workshop (unless you are driving a Humvee) if you can leave 4 feet free at the end for a bench.

    Cheers

    Jeremy
    Cheers

    Jeremy
    If it were done when 'tis done, then 'twere well it were done quickly

  4. #34
    Join Date
    Jun 2005
    Location
    Montenegro
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    0

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    The best method for making resin-thing laminations is to use vacuum. Cover cloth pads with plastic foil. Glue edges of plastic foil to base of "tool". Than you pick up one tube and insert it under plastic foil at one corner. Another plastic tube is put in corner oposit of first one. Than you use vacuum pump to suck out all air. After that you open second tube that have been sink in resin and continue to suck air until all under plastic foil have been filled up.

    I saw this method on one french bow-building forum.

  5. #35
    Join Date
    Mar 2006
    Location
    Mildura, Victoria
    Posts
    379

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    Thanks Cameron for this thread. Making your own medium is smart, clever, ingenious, fun, etc., - to offer it to others is grand.

    I do have a question: Could the 'pad' be put together is stages? That is, say, 20 pieces today and another 20 next week, and the reason I ask is I move VERY slowly so suspect the first layers of resin would cure before I got to the 60th.

  6. #36
    Join Date
    Sep 2005
    Location
    Hobart
    Age
    44
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    I like this multi-quote thingy...

    Quote Originally Posted by Skew ChiDAMN!! View Post
    Good to hear from you again!

    Correct me if I'm wrong... but you don't need a shed to make up castings. Just think of the stockpile of blanks you could have cured & ready for working by the time you're tooled up again.
    True, but I did that just before I left... I have a big pile of blanks - luckily I have an offer to borrow someone else's lathe now. It is a long drive, but it will be worth it when I find the time!

    However, my first task (while I am finding a convenient time to get in some shed time) will be to make a copper and nickel chess set by cutting and crossing two bits of sheet metal.

    Although I may make some more blanks - it isn't a bad idea at all.

    Quote Originally Posted by jmk89 View Post
    Great to hear from you again, Cameron.
    Good luck with shed activities? Does you apartment have a LUG? If so, you have a workshop (unless you are driving a Humvee) if you can leave 4 feet free at the end for a bench.

    Cheers

    Jeremy
    Yeah, I don't have a lock up garage. I wish I did - I even looked into finding some kind of storage, but nothing was appropriate - and tools here are so cheap too!!

    Quote Originally Posted by masoth View Post
    Thanks Cameron for this thread. Making your own medium is smart, clever, ingenious, fun, etc., - to offer it to others is grand.

    I do have a question: Could the 'pad' be put together is stages? That is, say, 20 pieces today and another 20 next week, and the reason I ask is I move VERY slowly so suspect the first layers of resin would cure before I got to the 60th.
    It is not really my own idea, I just use it slightly differently.
    The "pad" really needs to be done all at once. The reason is that the way that resin hardens has a process called cross-linking. The idea is to get cross linking through each layer of cloth.

    However, there are ways to increase the rapidity of the process:
    1. Don't paint the resin on, dunk the cloth.
    2. Use thicker cloth (although you still need to really wet each piece)
    3. Call a mate over and have a dunker person and a lay-up person.

    Also, to slow it from drying to fast:
    1. Do it in cool weather if possible (such as night-time maybe) - often not a problem if you are in Tassie (where I was).
    2. DON'T do it in a breeze.
    3. DON'T do it in direct sunlight
    4. Add slightly less catalyst - this is a little tricky to get quite right - the key is the word slightly.
    5. Do not try to make up all of the resin at the start. Making resin is fast, but the resin itself will start to gel up fairly quickly, I can remake the resin as many as ten time in a single lay-up.

    I hope this helps.

    Finally, if you are still having trouble getting it done, make thinner blanks by all means BUT it won't work as well and make sure that you rough up the hardened blank before trying to glue the next layers on top (and I would do it that way rather than making several blanks) - although really that is just supposition.

    Cam
    <Insert witty remark here>

  7. #37
    Join Date
    Mar 2006
    Location
    Mildura, Victoria
    Posts
    379

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    Cameron, another question regarding this use, if you don't mind. How much resin would you set-up with before starting the process? I ask because 500g is the largest container I found at Bunnings, and the 'flood' suggestion you offered seems to need more (I've cut some scrap steel to about 300x200)

    soth

  8. #38
    Join Date
    Sep 2005
    Location
    Hobart
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    44
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    Quote Originally Posted by masoth View Post
    Cameron, another question regarding this use, if you don't mind. How much resin would you set-up with before starting the process? I ask because 500g is the largest container I found at Bunnings, and the 'flood' suggestion you offered seems to need more (I've cut some scrap steel to about 300x200)

    soth
    Of course, I never mind questions... My answers aren't always good though!

    500g is heaps, I usually made mine in 200g batches (I think). I put it in a small icecream bucket then kind of just slopped the cloth around in that - then squeeze it out with your hands (WEARING DISPOSABLE GLOVES, i.e. latex gloves). There are two reasons to do this:

    1. It actually squeezes the resin through the cloth more thoroughly.
    2. You don't have too much resin (that will later just be squeezed out the sides of the blank).

    I am excited that you are going to give it a go. Make sure you post your results here.

    Don't rush getting it out of the mould though and make absolutely sure that it is dry all the way through before playing with it - I have wrecked many blanks by rushing them. . Still, that is what I am here for...

    Cam
    <Insert witty remark here>

  9. #39
    Join Date
    Mar 2006
    Location
    Mildura, Victoria
    Posts
    379

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    Quote Originally Posted by CameronPotter View Post
    ......... However, my first task (while I am finding a convenient time to get in some shed time) will be to make a copper and nickel chess set by cutting and crossing two bits of sheet metal. .......... Cam
    I hope we get a couple of pictures of this (hint).

    I have clamped-up, using your method, some pure cotton material and it will stay clamped till I recover from a touch of surgery next Wednesday. I hope over clamping/drying is not an error. I had the opportunity to buy towling at very cheaply - boy, does that soak in the resin.

    soth

  10. #40
    Join Date
    Sep 2005
    Location
    Hobart
    Age
    44
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    0

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    Hi,

    I hope your surgery went well!

    I am looking forward to seeing how your lay-up went.

    I will certainly post some piccies of my chess pieces when I get around to doing them - I need to find time to get some sheet metal first though and I am just insanely busy at work right now...

    Cam
    <Insert witty remark here>

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