Hole saws - which ones to get?


#1

so i go to home depot to look for hole saws, and didn’t really fine what i was exactly looking for. anyways, i’ll list what i found and what i intend to use it for, anyone want to offer some advice:

25 mm - sanwa OSBN-24
29 mm - sanwa OSBN-30
32 mm
35 mm
38 mm - maybe to make clearance for the osbn-30 nut?
41 mm


#2

24mm=15/16" in standard.


#3

24 and 30 dude. Ace hardware or online.


#4

I buy mine from here

http://www.woodcraft.com/family.aspx?familyid=8311


#5

If you want the english size equivalants,

15/16 ~ 24 mm (a little large but ok)
1 3/16 ~ 30 mm


#6

What about for the joystick hole in the plexi? How big should that be?


#7

24mm


#8

Home Depot is not 30mm friendly. I found a 30mm hole saw bit at a local Ace hardware in socal.


#9

kubebot

get em from the link I posted, theyre quality and decently priced…


#10

Are forstner bits better in general (wood,plexi,metal)?


#11

wood yes, plexi yes, metal… not unless you feel like buying new bits often


#12

Alright sounds good I’ll pick some up when I do my next build.


#13

i’m a noob when it comes to tools, do you use forstner bits with hand drills? I’m going to need to drill the usual 30mm and 24mm holes in plastic, a utility box, dreamcast agetec stick side, and some plexi but probably also wood in the future should i choose a different bit if all i have access to are hand drills?


#14

Yes hand drills work fine in lieu of a drill press, especially for thin cuts. Forstner cuts tend to follow your pilot holes exactly so if you can get those relatively straight you are good.


#15

if you dont have the exact number bits, i would suggest using a slightly smaller size and use a file to file down the rest i.e 22mm hole/ file the extra 2mm and 29mm hole/file 1 mm down, you can get curved files for the job too (if you take your time you can make a decent job of it, any minor blemishes will also be covered up by the buttons/dust guard anyway)


#16

thanks guys


#17

um… I know that amazon sell Starrets Hole Saws 30mm.
Otherwise, I use this site. They have alot of bits!
http://www.toolstoday.com/p-5421-spade-bits-w-spurs-6-long.aspx?variantids=8219,0&affiliateid=10054


#18

get a hss (high speed steel) holesaw, futureproof purchase in case you ever need to drill in metals/alloys and not mainly wood.


#19

I would go Fostner on the wood for sure but wouldn’t use the Fostner bit on the plexi. You will need a good hole saw like this http://www.amazon.com/gp/product/images/B000WA3UX2/ref=dp_image_0?ie=UTF8&n=228013&s=hi The Fostner heats up the plexi too much and causes melting. Just my 2cents :smiley:


#20

Could there be any issue using a metal cutting hole saw on wood?