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Diy dremel bud trimmer3/9/2024 ![]() I did a bit of research on bevel gear set up (setting up cfrown wheel and pinion on rear wheel drive vehicles) I re-fitted bearing after cleaning all the old grease then re-greasing with synthetic grease (I use it on motorcycle wheel bearings and any grease points - usually swing arm bearings) After de-burring shim it fitted shaft pretty good. Used a tin-snip's to cut shim roughly to size. Picture of gear shaft in the hole, checked before removing from drill press - 'just in case' Very surprised when the '4th step' was correct size Measured step drill to find something close to 0.470" diameter. When cap flattened off it was overhanging sides of wood so I had to find some bars to grip wood without touching cap edge. ![]() Used bench vice to press cap 'teeth' into a piece of scrap pine. Tried holding cap in drill vice, too flimsy and didn't work. ![]() Used a bottle cap as it was steel instead of aluminium soft drink can (I think it's off a 'Bud'?) I know aluminium will 'squash down' over time so didn't use it The bearing below gear had to be removed to add a shim underneath Step 3: Making a Shim I didn't take any measurements just 'eye-balled' the gears assembled in half of gear head and used what I found lying about. It's an odd size though so I had to make a shim. Two pictures of drive gear from slightly different angle trying to show the burrs on teeth.You can see the depth of tooth remaining, adding shims between bearing and gear will 'lift' it into deeper engagement. I started re-shaping the driven gear (in vice) then decided to take some more pictures.įirst picture, top 2:00 position has already been roughed out with burrs removed The two case halves were very tight,'snapped' together maybe? I couldn't find any assembly clips though? Then tapped things with hammer from various directions but ended up using a flat screwdriver as a pry-bar to separate halves (I thought I had pictures but something must have gone wrong as I can't find them?) Took out all the screws (after finding the one hidden under blade cover) Forgot to take pictures - sorry You only need the pointy 'tree' burr but full set from China is cheaper than getting single burr locally Step 1: The Offending Part ![]() Thin steel (I found a bottle cap) and had one shim washer I'm making a few assumptions that anyone reading Instructables will already have majority of tools needed, Dremel is now a generic name for mini grinders most of the other tools required are relatively cheap (except for Dremel, you could probably get everything needed for less tan $30.00) I've had my Dremel for at least 10 yrs, it's old and tatty but works fine (just like me :o) ) Tools Requiredīench vice (makes life easier but any sort of holding device can work)Ĭaliper ((around $15.00, Harbor Freight, et.al.) With nothing to loose I decided to take it apart and find out how much damage had been done New parts seem to be still available but I really didn't want to spend $50.00+ for a machine that only cost $80.00 (around 10 yrs ago) It had a pretty serious vibration problem for a few years,I assumed the engine was worn out but when drive stopped working motor still ran fine In this Instructable I'm going to show how I repaired an old 'Weed Eater' string trimmer. ![]()
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