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Thread: Privacy screen WIP
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9th October 2011, 07:30 PM #1
Privacy screen WIP
Hi all,
Well the coffee table is almost at an end, time to get another project under way!
I Spotted a picture of this privacy screen in 1 of the recent issues of fine woodworking, in the readers gallery. It really caught my eye, so armed with nothing more than a pic & a basic height & overall width i jumped into google sketchup & drew up a model. It stands just over 1800mm high & just under 1700mm wide when setup. Anyone who wants a copy of the sketchup model PM me & i'll email it to you, it is too big for the file size limit.
Its to be made from purpleheart & macrocarpa.
There are 177, 19mm wide x 5mm thick slat is the model i drew up so that was where i decided to start off with. I picked up some macrocarpa beams 55mm x 155mm x 2m from the local mill & i especially asked for timber with as few knots as possible as i felt that knots may weaken a slat. First job was to dock them into 650mm lengths, joint & face the lengths ready for the bandsaw. I got about 5 slitches per board, 6 from a particularly straight & clean board. Each flitch was then thicknessed down to just over 5mm then sanded to 180 grit. From there it was to the tablesaw to cut out the slats. Dodging knots meant a bit of waste but not a lot considering how 'knotty' macrocarpa tends to be. I would think no more than 15%. At the end of the day i ended up with 173 slats, just 4 short of my target. So tomorrow i'll cut another 3 flitches on the bandsaw then sand & rip them into more slats. I want to have a few extras so i can toss out any dodgy slats i might have let thru.
The last pic is of a particularly wide, flat sawn board i picked up & will use for the wide panels at the bottom of the piece. 1 of the boards i used for the slats, an especially clean board will be cut into 15mm thick boards for the top panels.
All the way thru this process i've tried to keep grain integrity, i'm intending to carry this all the way thru to the end. I'm not sure if it will show or not but i chose macrocarpa specifically because of its darker grain on a pale timber, this timber also has some nice fiddle back running thru it. If it translates into the finished piece it should be quite nice to look at.
Cheers, Ratty.
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9th October 2011 07:30 PM # ADSGoogle Adsense Advertisement
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12th October 2011, 10:43 PM #2
Another one to watch.
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12th October 2011, 10:57 PM #3.
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12th October 2011, 11:05 PM #4
I especially like it when people pay attention to grain, even when that translates to pieces where the one piece of timber it came from runs over the the whole thing.
(can't think of another way to write that so hope that makes sense)
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13th October 2011, 07:31 AM #5Skwair2rownd
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Like it Ratty and I have to agree with Waldo about the grain.
FWIW I would have made the wings just a little taler so that the top rail was aligned with the bottom rail of the top frame in the middle section,l
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13th October 2011, 07:58 AM #6
Thanks guys, hope you're going to enjoy the show.
A slight change to the design, instead of purpleheart frame i've decided to go with river redgum instead. I only have a few boards of purpleheart left & most of it has some really nice fiddle-back running thru it & the way i'd cut the boards to maximize the timber would mean the fiddle back would be to the edge. It seamed like such a waste. Instead i have some river redgum with some really nice fiddle-back also running thru it but because the boards are only 40mm thick it means the the fiddle-back will be on the face rather than the edge.
Artme, i'll have a closer look at your suggestion today, i have about 14 slats extra so extending the outer wings to the height you suggested would only mean adding 2 slats per wing. Well worth looking into, i think your suggestion could be a good one.
cheers, Ratty.
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13th October 2011, 10:14 AM #7Wood and Metal Enthusiast
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Sounds like an interesting project!
Look forward to more piccysLive life to the fullest, you have to go big and do everything with your all or why do it at all?
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13th October 2011, 09:15 PM #8Golden Member
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Great project. Pulling up my seat to watch it progress.
___________________________________________________________
"The things I make may be for others, but how I make them is for me."
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14th October 2011, 07:14 PM #9
Thanks guys.
Not a lot to see in the way of pics today but plenty done. I got the redgum machined to size, 38mm wide x 25mm thick yesterday & began the sanding process. The headers will be 38mm wide x 45mm deep, i plan on laminating 2 pieces of the 25mm together to give me 50mm thick which i'll then machine down to 45mm. The seam will only be able to be seen on the upswinging ends if at all - i hope!
This redgum is hard as rock & with the fiddle back running thru it, its also murder to scrape & sand. I grouped the timber together to sand so that the edges don't round over. To remove the blade marks i ended up going down to a 40grit paper & several resharpening of my scraper. So far i have all the stiles (or styles however its spelt) sanded to 220grit & all the rails & the headers sanded to 180. Tomorrow should see me finish sanding the rails & headers to 220. I'll continue to sand up to 400 later in the assembly.
From there i'll begin docking all the components to length, the redgum frame & the Macro slats & panel inserts. That i imagine will take me right thru Saturday, maybe into Sunday, depending on how my back holds up.
Following Artme's suggestion, last night i had a play with google sketchup & raised the outer wings so their headers were parallel with the rail. I tend to agree with you artme, but i also kind of like the step down effect you get with the way it was before.
The pictures aren't much to look at but it kind of gives u an idea of the fiddleback & wavy grain running thru the redgum. I tried a bit of boiled linseed oil on a piece & it really makes the timber pop - i machined it up before i remembered to photograph it.
Cheers, Ratty.
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14th October 2011, 11:43 PM #10Intermediate Member
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hey jst wandering, how do u post up a new thread? i need some advice for my hsc thanks
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15th October 2011, 12:28 AM #11Wood and Metal Enthusiast
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Nice selection of timber! Grain looks sweet
Live life to the fullest, you have to go big and do everything with your all or why do it at all?
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15th October 2011, 07:47 AM #12
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15th October 2011, 06:31 PM #13
Hi again,
Another busy day in the shed, some more sanding then moved on to cutting the rebates for the slats & the panels. The slats are 5.5mm thick so i chose to cut the rebate on the table saw cutting 1 face of the rebate then flipping the stiles end for end & run it thru again to cut the other face. The channel was cut to a depth of 10mm.
From there it was over to the router boss to cut the rebates for the panels. The panels are 15mm wide, i cut the rebate to the same width, also 10mm deep. This means that the panels are free to expand & contract without revealing a gap.
This redgum is very chippy so i widened the panel rebates in 3 cuts, the first up the middle with a 1/2" spiral bit leaving a bit over 1mm to trim off either side, i set up stops making the job simple. From there it was just a matter of squaring the corners. 1 done 11 more to do.
The bottom panels are 195mm wide, rebated in all round 10mm. The top panel is 160mm wide, also 10mm rebate all round. I won't be cutting the top panel rebates or the dominoes for the rails till i have spaced out the slats. With 68 slats in the tall center section & 58 slats in the wings, even 0.1mm error in width per slat could easily add up to quite an error so my plan is to fully assemble dry-fit the lower section then lay out all the slats in their rebate & in the order i want them in then finally mark out where the second upper rail is to go in place. from there i can work out the final length of the stiles.
All very convoluted & all but it seemed the best fit for my head.
Cheers, Ratty.
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16th October 2011, 06:13 PM #14
Just a couple pics of todays progress.
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16th October 2011, 06:29 PM #15Wood and Metal Enthusiast
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Coming along nice
After spending the weekend wresting with crap clamps im drooling over yoursLive life to the fullest, you have to go big and do everything with your all or why do it at all?
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