How do you open the housing on the dremel 300, looks like you need 8 point star screwdriver

Is the 'screw' more of a star shaped hole? I think Dremel use a TORX head screw. It is possibly a T15 size. The website below is for a plug in Dremel to change a bearing assembly but removing the cover on a cordless model is basically the same as this. Read the whole description BEFORE you start to make sure you don't damage anything by accident.
https://www.ifixit.com/Guide/Dremel+4000+Bearing+Assembly++Replacement/60834

they are star screwdriver , you can get a cheap set on ebay look in the phone dept for repairng cell phone along that line

To Replace a Tailgate: Tools needed for the replacement:- Star shaped sockets- Flathead Screwdriver- Long Nose Pliers- Shop Light- Dremel w/ disc cutter for plastics, Remove the 2 outer long star shaped screws: Close Tailgate and pull down and out the handle bezel. The bezel itself its being held by 2 plastic anchors. To remove the handle from the tailgate we need to open it. Pull the linkage from both sides inward and the tailgate should open. Remove the 3 large star shaped screws-------------------------------------------------------------------------------------------
Tacho Pro 2008

Dremel has on their homepage an accessory fast finder.

I am sure you can get closer information by searching their fast finder.

Good Luck

http://www.dremel.com/en-us/Pages/default.aspx

Try at eReplacementParts.com : Power Tool Parts and Tool Repair Diagrams

If you need more help post back!
Thumbs and testimonial are welcome!

Something similiar with a belt sander on / off switch that had dirt inbetween the contacts in the switch. After cleaning the switch contacts it worked.

This is one of the mean tricks that the industry uses to discourage people from opening things and then totally ruining them.

What about getting yourself a 5-star-shaped screwdriver? Ask your hardware store guy.

Too expensive? Well - I have a lot of different simple slotted screwdrivers. Normally I find one that fits into 2 corners of these "miracle screws". If you don't have fitting one use a cheap one that is slightly too large to fit and grind it down just to size.

The same trick works with the other kind of "discouragement screws" that have ALMOST a normal slot --- but there's an elevation in the middle of it. A slot screwdriver with a ground-in **** in the middle (Dremel tools work fine) does the trick.

Another suggestion: you could put a point on that rod with a grinder or a file, or a dremel, and it's good as new.

Charlie

Could I get a "problem solved" / "fixya" rating on this -- there are icons at the bottom of this posting I believe.

thanks...

That 4 point star you refer to is a large phillips head srewdriver slot w/ hexhead so when you can't get a socket or open end wrench on it you use a srewdriver...even a flatblade screwdriver that fits into 2 points of the 4 will remove them.....Good luck to you friend....Tim