PCFormat Forum Archive

Posted: **18 Oct 2007, 15:44**

Is a slow, medium or fast drill speed FTW for drilling about 8mm holes in 3mm plexi?

Rob~!

Posted: **18 Oct 2007, 15:46**

ask me... slow and steady... and dont push down... Let the weight of the drill do the pushing.

Posted: **18 Oct 2007, 15:49**

Rob - slow and if possible, use a blunt drill bit as it doesn't catch, which cracks the plexi...

trust me on this, i used to manufacture signage using 2mm and other plexi..

darkranger wrote:Let the weight of the drill do the pushing

agreed..

Posted: **18 Oct 2007, 15:55**

Don't EVER drill fast in plexi, no matter the drill bit size. This is my personal opinion which i have formed from working with plexi constantly for almost 2 years now.

Posted: **18 Oct 2007, 15:56**

DAE_JA_VOO wrote:Don't EVER drill fast in plexi, no matter the drill bit size. This is my personal opinion which i have formed from working with plexi constantly for almost 2 years now.

And that is where I learnt the bit I know about plexi.

Posted: **18 Oct 2007, 16:00**

Slow and easy does it... Read that everywhere on the net. + you know... Dae

Posted: **18 Oct 2007, 16:01**

Dae - have you tried using a blunt drill bit before? it works really well, obviously you can't go faster, but the chances of you cracking the plexi are so much less...

just a thought, maybe next time the MOD-master has to drill through plexi..

Posted: **18 Oct 2007, 16:35**

lol ok thanks guys, oh and like, can you smooth the insides of the holes to look nice!? im gonna make a radgrill....

Rob~!

Posted: **18 Oct 2007, 16:37**

douglash wrote:Dae - have you tried using a blunt drill bit before? it works really well, obviously you can't go faster, but the chances of you cracking the plexi are so much less...

I also prefer blunt drill bits

I HATE buying new drill bits because i first have to make them blunt on my bench grinder before i can use them.

Sharp drill bits are from the devil, i'm telling you. Sharp Drill Bits + Plexi = sad case modder

Posted: **18 Oct 2007, 16:42**

dajeavoo wrote:Sharp drill bits are from the devil, i'm telling you. Sharp Drill Bits + Plexi = sad case modder

ROFL - so true...

Posted: **19 Oct 2007, 09:24**

One the quick question. When you cut slots in say a drive cage made of plex. What's the best way to sand the inside to get it smooth? Have thought of folding the paper and running with it, but el' problemo, not straight line.

PFS*

Posted: **19 Oct 2007, 11:03**

how thick are the slots? if you can, fold a sheet of sandpaper around a ruler or thin plastic object that can fit in the slot and sand, slowly...

Posted: **19 Oct 2007, 12:53**

4mm. thanx - didn't mean to hijack your thread Rob~.

PFS*

Posted: **19 Oct 2007, 13:08**

hmmm, 4mm, not much to work with, but like i say, take a thin object with sandpaper folded around and sand slowly...

time is your greatest tool, use it...

Posted: **19 Oct 2007, 23:08**

get a small needle file,, it will fit in nicely. Hell, spring for a small diamond needle file and you can use it on anything them

Rob, for 8mm holes, I would buy a Step drill, they really are the best thing when drilling into plastic and alum. They make 100% round holes, and they work incredibly well when you need to make a hole bigger from say 5-10mm,

Posted: **19 Oct 2007, 23:56**

DAE_JA_VOO wrote:
douglash wrote:Dae - have you tried using a blunt drill bit before? it works really well, obviously you can't go faster, but the chances of you cracking the plexi are so much less...
I HATE buying new drill bits because i first have to make them blunt on my bench grinder before i can use them.

Just drill into a solid wall, problem solved

Posted: **19 Oct 2007, 23:59**

@Wikid - LOL I thought the same thing!