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I'm bulding a flexirack with 1" thick threaded rods.How large should the hole be that I drill for the rods in the shelving?
I have a spade type drill bit that measures 1 1/8th" Is this enough of a step up or too much?
Should I start with a much smaller drill bit as a guide before going for the larger hole?
Thankyou.
R Lawrence.
Follow Ups:
I only used 3/4" rod, and drilled the holes 3/4". The threading on the rods acts like a file when feeding through: a nice tight fit, no real problem. The guy who the other day said they're called "flexi" because they wobble hasn't seen mine. Very solid. (Called "flexi" because the shelf spacing is flexible.) Can you not drill a test hole in some scrap first? BTW, MDF kills spade bits. I'd say after 20-24 holes (at 3/4") the bit is pretty much toast as far as edge goes.
same construction except that the holes are larger and uses a rubber or like material between the washers and shelves on the Flexy.Flexy moves/wobbles by design
Salamander clones do not wobble by design.
I also think that true Flexys are 3 rods not 4, my definition.
Both designs haveidentical flexible shelf height placementsYou can only tell the differnce by touching, not by looking.
that a true Flexi had larger rod holes so it could flex a bit. I would have totally hated that, regardless of how it sounds. Thank goodness I missed that construction detail... So I guess I have a generic threaded rod rack.
I just drilled 3/4inch then put in the 3/4inch rod. Very solid but definately put your heaviest stuff on the bottom.
Even with 1/8th of an inch over size, I can't imagine that this design is going to flex at all.*Evil chuckle*
I'll bore you all with pictures when I'm done.
I think I might actualy try to get an extra long spade bit I saw for sale at the same branch of OSH.
I have a feeling I might have problems lining the holes up with the bars if they're not absolutely identicly spaced.
Rob.
Perhaps not. My flexi has 4 legs, so I made a hole template, hole centre 1.5" in from the edges - easy. I also sat on it when completed (I'm 140 lbs, flexi 8 shelves ~4.5' tall, I forget flexy dim. exactly, I'm heavier than most components). FYI, the Home Depot iron-on veneer works excellently, if straight-on shelf looks ever becomes relevant...Don't fret on the hole spacing too much, make a template...uneven spacing makes solidity (stiffness, etc....) unless you're WAY out.... (please try not to be ).
With a spade bit, first make a small mark with a bradle or even just a large nail. That way you can "feel" the point of the bit into the right position. Are you using a bench mounted drill? Its much more accurate especially for getting it vertical.
Drill in a little and come out. Do this a few times as you go through, it allows the bit to clear better.
If you put a scrap piece of wood or something similar under the MDF, you won't get tear out from the underside.
Use a high speed for the drill and don't force the bit into the MDf, let the blades do the work.
It only takes a few seconds to do so its better to do it right!
This should be perfect. This provides for 1/16-inch clearance all the way around. If using a spade bit drill part of the way through until the tip of the spade is out the other side. Flip the material over and complete the hole. This method minimizes tear out.
Dave Toatley
So how should the hole be started off?
Is it okay to just go straight to it or does there need to be a pilot hole?Rob.
Try a Freud Carbide Forstner Bit, they drill nice clean holes
in wood, MDF and Corian. A FD008 1 1/8" bit would work fine.
I agree, thought about puting damping around rod but settled on oversized nylon washers with damping between shelf. I had a radius cut on all the shelve edges [with a router] of about 10 mm, looks the biz.
had the mdf sealed with a high gloss polyeurathane varnish - now look a golden honey colour with an oatmealy finish - been absolutly smooth.
Built two -onefor hifianda half hight for TV with rotating standto turn the TV.
I went 1/8" over and it was perfect.Measure twice, drill once.
r
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