120mm fan hole saws

[ryuen]

im wondering what sizes will work

ive heard 4 1/2. can i use other sizes close like 4 1/4 or 4 3/4?

what sizes are good?

[ziptieboy]

120mm/25.4mm = 4.72 inches
So, a 4.5 would work, a 4.75 might work also. Try on a piece of scrap just to make sure.

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[stool]

4 1/2" is fine.

[ryuen]

is 4 1/4 too small? any other sizes besides 1/2 and 3/4?

[glock19owner]

4-1/4” = 108mm
4-1/2” = 114mm
4-3/4” = 121mm

4-3/4 is better...wont block any of the airflow...

[Ben721]

Go to a plumbing supply store, I got a 117mm saw.

[ryuen]

how much did it cost there? does any1 knwo where i can get them cheap like under 20 dollars. directron sells them for 30. i can get a cheap dremel at that price. at ebay its around 20.

[glock19owner]

I just went to Lowes and got mine...for around 20.00...Menards might have them a little cheaper...

[TheGhengisKhan]

to heck with that, just mark a hole by outlining a CD (perfect size) and using a jigsaw, or dremel, and a steady patient hand. ;)

[amdperson]

That hint to use the cd works wonders.

Thanks