Who makes a HIGH QUALITY drill guide?

[PETE14]

So, up until today, I didn't know these existed. I am working on a project, and I need to drill some very accurate (perpendicular) holes near the center of a largish piece of plywood (sheet is now 4' x 5'). I am the master of drilling less than perfect holes trying to "eyeball" it. So searching good old Google, I see a few different variants of drill guides. Most range from very cheap to mediocre, with product reviews telling it like it is. I figured someone must make a high quality version, but so far haven't found it. Does any one know of a premium drill guide? I don't really care about the adjustable angle feature, my immediate need is only for straight, perpendicular holes. Pic below for reference.

 

[ca90ss]

Mafell does.

 

[ca90ss]

Or you could modify a cheap drill press. Turn the head around 180 and then cut the post it sits on short enough for it to drill through the plywood.

 

[foodgroup]

So, up until today, I didn't know these existed. I am working on a project, and I need to drill some very accurate (perpendicular) holes near the center of a largish piece of plywood (sheet is now 4' x 5'). I am the master of drilling less than perfect holes trying to "eyeball" it. So searching good old Google, I see a few different variants of drill guides. Most range from very cheap to mediocre, with product reviews telling it like it is. I figured someone must make a high quality version, but so far haven't found it. Does any one know of a premium drill guide? I don't really care about the adjustable angle feature, my immediate need is only for straight, perpendicular holes. Pic below for reference.

If you have a drill press, you can make a throw away jig by drilling a same size hole in a piece of scrap hardwood.

On the plywood, use an awl to mark the hole and drill a tiny bit freehand to enlarge, then use the jig to keep it straight while you drill through.

 

[PJNJ]

If you have a drill press, you can make a throw away jig by drilling a same size hole in a piece of scrap hardwood.

Use an awl to mark the hole and drill a tiny bit freehand to enlarge, then use the jig to keep it straight while you drill through.

This ^ or one of these -

http://www.amazon.com/dp/B0061FY004/?tag=atomicindus08-20

or

http://www.amazon.com/dp/B00F1ZJFZK/?tag=atomicindus08-20

 

[PETE14]

Thanks guys - some good suggestions.

What I'm actually doing is installing about 20 or so of these threaded inserts into 3/4" plywood, and when they are installed, it is important that the threads be as perpendicular as possible. The inserts will be countersunk so as to be flush or a little below flush. I plan to locate the holes with a small pilot bit, then put a 1.25" counter bore about .200" deep with a 1.25" forstner bit, then lastly drill a 19/32 thru hole to accommodate the inserts. Ideally, it would be nice to have both the forstner bit and the 19/32 bit aligned with some kind of jig. Also, a depth stop to somewhat accurately get the .200" depth would be a huge plus.

That Mafell set up looks really nice - I'm afraid to ask how much that costs.