Bosch 1200 are issues (from a complete amateur!) - Router Forums
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post #1 of 7 (permalink) Old 02-01-2017, 07:03 AM Thread Starter
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Default Bosch 1200 are issues (from a complete amateur!)

Hi all,

Really great to stumble upon this forum!

I've just bought a Bosch 1200 ae. It's my first router and have read good things. However I'm really struggling with it.

It's my second one. Sent the original back because i was convinced the collet was faulty. However I'm having the same issues with this one. When I first opened it I was able to fix the router bit (supplied with the router) with no issues. when I've come to use it today the bit won't fit in the collet and I'm tightening and untightening of the nut isn't doing anything at all. When it's locked it will either lossens right off the drive shaft or screw to a lock.

As mentioned, I'm not sure if I'm just making a rookie mistake here.

Can anyone help me with this please?!

Many Thanks in advance.

Ollie
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post #2 of 7 (permalink) Old 02-01-2017, 11:28 AM
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Ollie; welcome!

In NA the router bits come in two shank sizes...1/4" and 1/2". The collet has to be the correct size for the shank size you want to use. Bosch routers come with both sizes in the box when you buy them (new).
It sounds like you have a 1/4" bit and a 1/2" collet...won't work, and if you over-tighten the nut you might damage the collet insert (the cone part).
The nut tightens/loosens in two stages. Does the 1200 have a shaft lock, or do you need two separate wrenches (one for the collet nut and the other for the shaft)?
Don't let the router bit bottom out in the collet! Insert it until it's fully in then pull it back out by at least an 1/8". This is really important.
You can buy little rubber 'doughnuts' that drop into the collet, which prevent the bit from actually bottoming out.
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post #3 of 7 (permalink) Old 02-01-2017, 11:41 AM
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Hi Ollie and welcome. Are you in the UK because I searched for that model and it came up as having the standard supplied collet as 6mm? As Dan said you have to match the bit size and it can be deceiving. I picked up a Bosch bit out of my collection that I hadn't used before that I got off an internet site and stuck it in a 1/4 collet. It felt quite loose so I checked it with a caliper and it was 6mm instead. A 1/4" shank might not go in a 6mm collet and if you did manage it it would quite tight.

Another possibility is that it is the right shaft and collet but you've tightened the collet down without a bit in and squeezed it together. You can take something very fine bladed and open the slits up again but it may not work as well as it did. So be aware that you should never do tighten the collet down when no bit is in it.
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post #4 of 7 (permalink) Old 02-01-2017, 02:49 PM
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Ollie; further to what Charles said, you can easily replace the collet cone part if you think it's damaged or the wrong size.
Please fill out your profile with a bit (no pun intended!) about generally where you're posting from and some info about yourself. No compromising stuff like e-mail addies or contact info for your own security.
It really helps other members offer relevant info to you.
ie my including a link to a Canadian source won't be of much use if you're in the UK, as Charles guessed.
Example below...you actually only would require the inner portion, not the whole thing...I think the cone only is around $10Cdn (?).
https://www.amazon.ca/Bosch-26109062.../dp/B0009H5MPC
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post #5 of 7 (permalink) Old 02-01-2017, 03:01 PM
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Here's a US 3rd party supplier...
Bosch Style Router Collets
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post #6 of 7 (permalink) Old 02-01-2017, 03:27 PM
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Quote:
Originally Posted by DaninVan View Post
Ollie; welcome!

In NA the router bits come in two shank sizes...1/4" and 1/2". The collet has to be the correct size for the shank size you want to use. .
and SAE/Metric...
Attached Files
File Type: pdf Collet_Maintenance.pdf (86.2 KB, 55 views)
File Type: pdf STUCK ROUTER BITS.pdf (117.1 KB, 57 views)
File Type: pdf Guide to Router Collets.pdf (163.0 KB, 62 views)

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post #7 of 7 (permalink) Old 02-01-2017, 06:37 PM
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Welcome to the forum Ollie.

Ross,
Rockhampton, Queensland, Australia


Enjoy the knowledge of others that can be found within.

‘Members are requested to add a first name in their profile as we are a very friendly bunch here'.
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