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Screw Inserts in Magnolia

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Forum topic by Olaf Gradin posted 2450 days ago 833 views 0 times favorited 3 replies Add to Favorites Watch
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Olaf Gradin

69 posts in 2474 days


2450 days ago

Topic tags/keywords: screw insert knock down brass magnolia

I’ve been working on a miter jig for the table saw and I’m having some trouble with screws in magnolia. The wood is dense, but I wouldn’t think any more so than oak. I have 1/4” brass screw inserts that I can’t get to seat nicely into this wood. I’ve increased the whole diameter in 32nds and 64ths to 1/4” now and I’m considering going up from there.

The problem has been that the wood puckers at the entry point as I apply pressure from the screw insert. The brass Clark’s head fitting begins to shear off towards the end of the insertion, so I’m already guessing I should probably move to steel. Possibly the saw-tooth steel variety.

Should I over-size the hole to accommodate the threads? I was afraid that that would substantially weaken the ability of the screw insert to hold firmly in the wood.

-- It takes a viking to raze a village. &mdash Blog'r: http://www.gradin.com


3 replies so far

View rjack's profile

rjack

110 posts in 2490 days


#1 posted 2450 days ago

You might try waxing the screw threads. This helps reduce friction and makes it easier to drive the screw or screw insert.

-- Roger - Havertown, Pennsylvania

View Thuan's profile

Thuan

203 posts in 2453 days


#2 posted 2450 days ago

Actually, it doesn’t have to look nice because the end result would be covered by the mating piece. So, chamfer the hole a bit. This takes are of the pucker. Then screw a 1/4 bolt into the screw insert as an installation tool, this lets you have a place to hold it nice and plumb while you gently tap it in. If you have a drill press, attach a 1/4” threaded rod and use the drill press lever as a press to get the insert plumb upon entry. Brass is soft, so the flanges should bend to fit in the hole.

-- Thuan

View Don Niermann  's profile

Don Niermann

207 posts in 2607 days


#3 posted 2450 days ago

Use steel screws to create the holes then the brass

-- WOOD/DON (...one has the right to ones opinion but not the right to ones own facts...)

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