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Paging Ed LaFontaine re:OSB 'Hay-bails'

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  • jonpike
    replied
    Re: Paging Ed LaFontaine re:OSB 'Hay-bails'

    Originally posted by edlafontaine View Post
    It is too easy to have more pressure on one side than the other...and not sand flat. Start out with only enough pressure to control the position of the sander...very little down force is needed. After the first pass, reposition yourself or the material by 180 degrees...or 120...or 90...you got options...
    You could always try the "lapping board" (or whatever a good name for one of these should be) angle... Take a large sanding belt, cut it into two strips, get some good double sided tape, and tape them down on a wide hunk of MDF. Lay box on board and sand back and forth, round and round. Wax on, Wax off... ;)

    If your box isn't too big, this will work fine and keep you from doing the uneven thing. I did a 10"x 17"x12.5" clone of the PE .75cu' box with one of these made with a 6"x48" belt. Worked great, and a great upper body workout too... :D

    Some clear filler might be an idea as well, to level out some of those deep spaces, if you want it really smooth.

    It's great to see someone use this stuff, Ed... I've thought about trying it before, and it looks even better than I thought it might.

    Leave a comment:


  • Paul K.
    replied
    Re: OT

    Unfortunately the Buckeyes ladies lost today to Tennessee, so the NCAA tournament is no longer of any interest to this household. On to the end of the NBA season and its playoffs. Go Lakers!
    Paul

    Originally posted by Paul K. View Post
    Very disappointing outcome for the Buckeyes and their fans. Couldn't have been a worse combination, good defense by Kentucky and poor shooting by OSU (some of the former contributed to the latter, of course). And, OSU missed at least 6 free throws to boot. There were many cases of "what if" that could have changed the outcome, but I was surprised at the way OSU defended Kentucky on the last possession. I would have thought OSU would have applied more pressure when Kentucky in-bounded and came down the floor, but I assume OSU was afraid of getting called for a foul. And I had to stay up past my bedtime to see the Buckeyes lose!:( Now hopefully the Buckeye women will win their game today against Tennessee and carry the torch a little further.
    Paul

    Leave a comment:


  • edlafontaine
    replied
    Re: Paging Ed LaFontaine re:OSB 'Hay-bails'

    It is too easy to have more pressure on one side than the other...and not sand flat. Start out with only enough pressure to control the position of the sander...very little down force is needed. After the first pass, reposition yourself or the material by 180 degrees...or 120...or 90...you got options...

    Leave a comment:


  • rogoll
    replied
    Re: Paging Ed LaFontaine re:OSB 'Hay-bails'

    Thanks. I'll run out and get some finer grits, and maybe just start out with them for my tests. I've never had an ocassion to use my belt sander before, but others have told me the same about the aggressiveness of them.

    Leave a comment:


  • edlafontaine
    replied
    Re: Paging Ed LaFontaine re:OSB 'Hay-bails'

    If using a hand-held belt sander, keep it progressively moving down the panel in an overlapping "S" pattern...switch to a finer grit sooner than you think...80 grit will waste a lot of material in a hurry.

    Put lots of random pencil marks on the panels to serve as an indicator for areas that remain to be sanded. Once the marks are sanded off, move away from that area, finish sanding the panel, inspect, mark up again, repeat.

    If you are asking around, they can go by several names:

    wide belt sander, flat bed sander, panel sander...

    The larger, production oriented shops will have them. Expect to get your material in at their convenience...

    Leave a comment:


  • rogoll
    replied
    Re: Paging Ed LaFontaine re:OSB 'Hay-bails'

    I haven't found a place yet, but I imagine in a place as big as Birmingham there's got to be some place that can do it for me. I had Lowes cut off a 6" stip to test on. I'm going to try my belt sander on it and see how good of a finish I can get myself, first.

    Leave a comment:


  • edlafontaine
    replied
    Re: Paging Ed LaFontaine re:OSB 'Hay-bails'

    rogoll,

    My recollection is that I used thinned poly for the seal coat, sanding between coats to scuff the previous coat and improve adhesion.
    I would use a sanding sealer for the first coat to do this again. I have learned it is much easier to scuff and level than poly. It is made to seal.
    To add stain the timing depends on the choice of material. It might precede the sealer or be added later as a "toner".
    Check your options on some scrap to get the look you want.

    Have you found a shop with the machines to help you sand the panels? The amount of sanding shouldn't be expected to yield a flawless surface. Some of the voids between wood chips are ~deep. Sanding to remove all of them will remove (I think) too much thickness.

    Leave a comment:


  • Paul K.
    replied
    Re: Paging Ed LaFontaine re:OSB 'Hay-bails'

    Very disappointing outcome for the Buckeyes and their fans. Couldn't have been a worse combination, good defense by Kentucky and poor shooting by OSU (some of the former contributed to the latter, of course). And, OSU missed at least 6 free throws to boot. There were many cases of "what if" that could have changed the outcome, but I was surprised at the way OSU defended Kentucky on the last possession. I would have thought OSU would have applied more pressure when Kentucky in-bounded and came down the floor, but I assume OSU was afraid of getting called for a foul. And I had to stay up past my bedtime to see the Buckeyes lose!:( Now hopefully the Buckeye women will win their game today against Tennessee and carry the torch a little further.
    Paul

    Originally posted by edlafontaine View Post
    Sometimes even she was wrong...:D

    Go Big Blue!

    Leave a comment:


  • rogoll
    replied
    Re: Paging Ed LaFontaine re:OSB 'Hay-bails'

    Ed, other than stain followed by poly, did you do anything else for the finish? Did you use any 50/50 glue/water to help seal them up? If I can make mine look 1/2 as good as yours, I will be very happy.

    Leave a comment:


  • edlafontaine
    replied
    Re: Paging Ed LaFontaine re:OSB 'Hay-bails'

    didn't your mother tell you that we don't always get what we want?
    Sometimes even she was wrong...:D

    Go Big Blue!

    Leave a comment:


  • edlafontaine
    replied
    Re: Paging Ed LaFontaine re:OSB 'Hay-bails'

    Yes, along with some other things...

    Here's hoping for a good game. ;)

    Leave a comment:


  • Paul K.
    replied
    Re: Paging Ed LaFontaine re:OSB 'Hay-bails'

    Originally posted by edlafontaine View Post
    I want them built and move on to other things...like enjoy KY put a basketball whoopin' on OU this weekend...:D...
    I'm sure that's what you want, but didn't your mother tell you that we don't always get what we want? :D
    Paul

    Leave a comment:


  • edlafontaine
    replied
    Re: Paging Ed LaFontaine re:OSB 'Hay-bails'

    Tom, one pair was there...the untreated ones. They were set up with a sub and won 2nd place in the "unlimited" category...there were 2 entrants, LOL

    The wood chips don't swell any more than solid wood would. ;) Stain or the first coat of finish will raise the grain slightly...that is to be expected with any wood project. The glue/binder in the matrix is intended for (some) exterior exposure.

    For rogoll & all, a further note on the assembly process:

    The bulls eye for corner butx joints would be flush, requiring no sanding, full surface contact with 100% glue coverage and no glue squeeze-out. That ain't gonna happen...

    So I'm lazy, and I want to get as close to that as I can. I want them built and move on to other things...like enjoy KY put a basketball whoopin' on OU this weekend...:D...

    I choose to include an allowance for overlap of the joints. I check the pieces coming off the saw for square corners and dimensional consistency. I spread enough glue on BOTH contact surfaces, make one panel overhang to other ever so slightly and fix the position by pins, brads or whatever...clamp as needed.

    AS the glue skins over, I use paper towels to remove the excess squeeze-out. I start this as early as needed to avoid glue runs down the face of the case. Arranging the pieces so any glue runs will go across the proud edge-not the face-works as well. Some dampening of the cloth aids in removal of glue that gets spread out. The grain raising and thinned glue layer left behind are easier to remove by sanding than the risk of pulling wood fibers up with hardened glue. Some glue squeeze out may be left behind right on the joint. This can be removed with a sharp chisel before it hardens, or taken off with a flush trim bit.

    You have options. Your experience will inform you of the timing most beneficial to exercise them.

    Leave a comment:


  • tomzarbo
    replied
    Re: Paging Ed LaFontaine re:OSB 'Hay-bails'

    Ed, I'm pretty sure I saw those at DIY 2009, were they there?

    I was wondering when you stained or finished them, did the larger bits of wood swell up any when they got some stain or finish on them?

    Particle board seems to do that a little. The little bits of wood that are exposed seem to swell just a bit with the paint making it difficult to get a smooth finish.

    Also, I seem to remember Bill F making some outdoor bandpass subwoofers out of that stuff in an old issues of speaker builder magazine from the 90's. It must be stronger/more moisture resistant that I give it credit for.

    I really think they turned out nice in the pics recently posted... impressive, and unique.

    TomZ

    Leave a comment:


  • edlafontaine
    replied
    Re: Paging Ed LaFontaine re:OSB 'Hay-bails'

    Thanks for the comments. I get lucky sometimes. The appearance was secondary to economy. I built the boxes to provide a listening experience for the EnABL treatment.

    Let me know if you need any thing else. ;)

    Leave a comment:

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