Gridgway Posted January 31, 2011 Share Posted January 31, 2011 I have a chassis to de-panel (not a 7, but the same construction). What size drill does one use? The same size as the original holes or smaller? How long will a drill bit stay sharp? Ie how many rivets wil lit drill out? Thanks Graham Link to comment Share on other sites More sharing options...
ECR Posted January 31, 2011 Share Posted January 31, 2011 If you dont worry about marking the panels, a sharp wood chisel is much easier ... Link to comment Share on other sites More sharing options...
Gridgway Posted January 31, 2011 Author Share Posted January 31, 2011 want to keep the panels in good condition to go back on. Graham Link to comment Share on other sites More sharing options...
Area Representative Paul Richards Posted January 31, 2011 Area Representative Share Posted January 31, 2011 If they are 4mm rivets as per a 7, then use a 4.1mm drill - much easier. How long will a drill bit stay sharp? Ie how many rivets wil lit drill out? How long is a piece of string? Longevity depends on quality of drill and what you are drilling. Just keep using until it gets blunt or breaks. Have a couple of spares. Link to comment Share on other sites More sharing options...
CageyH Posted January 31, 2011 Share Posted January 31, 2011 You need to find out what size rivets thay are, so you can just take out the core. I would use the same size drill as used for drilling the hole for the installation. As for life of the drill bit, that depends on the material of the bit, your cutting speed etc. Only dead fish go with the flow....! Link to comment Share on other sites More sharing options...
Bricol Posted January 31, 2011 Share Posted January 31, 2011 And wait for the fun when the rivet spins . . . I used, carefully, something like an 8mm bit - took the head off, punched the inner in and left it to shake the rust off the inside of the tube as it bounced around 😬 Bri Link to comment Share on other sites More sharing options...
k.russell Posted January 31, 2011 Share Posted January 31, 2011 i usually use a bigger drill than the hole to take the head off the rivet then punch the core of the rivet through. you will have problems drilling right throught the rivet as the steel rivet pin left in the pop rivet will fight the drill. Kevin R black(but sometimes orange)-ali HPC here Link to comment Share on other sites More sharing options...
Gridgway Posted February 1, 2011 Author Share Posted February 1, 2011 Thanks for all the wise words. I am now a de-panelling expert. I used a 4mm drill for 4mm rivets. I could dril some out very easily and some stuck as the drill span on the remains of the mandril. I became quite quick at spotting the stuck ones and just came back and used my centre punch on them. The panels were also sikaflexed on which made removal quite a painful job. Boy does that stuff stick! Lots of powder coat came off with the sikaflex. Makes caterham's powder coat look good quality!! The chassis is getting shot blasted and re-coated , so that's fine. All in all a fun activity. Graham Link to comment Share on other sites More sharing options...
Mark w Posted February 2, 2011 Share Posted February 2, 2011 Why are you drilling out in feb when you should be refitting by now for the spring ?????????? Link to comment Share on other sites More sharing options...
Gridgway Posted February 2, 2011 Author Share Posted February 2, 2011 Spare chassis being refurbed (not a 7)! Link to comment Share on other sites More sharing options...
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