How to Mirror Polish Inner Tube Joints and Box Sections
Creating a mirror polish finish can be particularly time consuming, especially when perfecting inner tube joints and box sections.
Save time by following Cibo’s simplified process;
Time Saving Kit 05 provides all of the essential abrasive products you need to create a high-shine mirror polish in a fraction of the time.
Sand down the welded joints using Cibo’s unitised discs.
Clean up using and remove residue using vienna chalk.
Read on for helpful tips and in-depth information regarding the TSK05 process. All of the below steps can be followed when working on both inner box and inner tube sections.
How To Mirror Polish Inner Tube Joints and Box Sections – Step 1: Preparation
Abrasive tip: To avoid the Finit Easy protective guard from preventing you reaching the inner corner of your workpiece, use a click and slide movement to lock it into a suitable position.
How To Mirror Polish Inner Tube Joints and Box Sections – Step 2: Sanding The Welds
Using the MA/8/T30 disc, sand down the welded joint in the direction of the final finish. Continue until the stainless steel is smooth and the joint is no longer visible.
To remove the weld discolouration, move the SA/5 disc away from the inner corner and back again. The flexibility of the disc reduces the risk of undercutting during this step.
Once satisfied with this result, repeat the process on the opposite side of the inner joint.
How To Mirror Polish Inner Tube Joints and Box Sections – Step 3: Perfecting The Mirror Polish
Attach the MHV5600/T31 felt disc on to your Finit-Easy machine. The optimum grinding speed for this step is around 2000 RPM.
Hold the disc against the PV/102 pink polishing compound and let it rotate until the edge of the disc is coated in polish.
Move the felt disc over the welded joint in a backwards-forwards motion to the edge of your workpiece until you are happy with the result.
How To Mirror Polish Inner Tube Joints and Box Sections – Step 4: Cleaning Up
The chalk will de-grease your workpiece and unveil the mirror polish finish without scratching your workpiece.
What is Included in Time Saving Kit 05?
All of the essential products you need for the mirror polish process are inside the box;
MA/8/T30 (x2 Discs) Unitised discs in grade 8 measuring 150mm x 3mm x25.4mm to sand down the welded joint.
SA/5/T31 (x2 Discs) Unitised discs in grade 5 measuring 150mm x 6mm x 25.4mm to blend the finish left by the previous abrasive disc.
MHV/5600/T31 (x1 Disc) 150mm diameter flexible disc made from high density felt for polishing.
PV/102 (x1 300g Bar) Pink polishing compound for a bright, highly reflective finish.
PV/103 (x1 150g Tub) Vienna chalk to remove polishing compound residue and leave the surface grease-free.
The following extras are not in the kit, but we do recommend them in order to take the quality of the finish a step further;
SV/19030 Velcro-faced hand dressing file with grip fixing for abrasive strips.
706GR/24/V006 (Available in packs of 25) Silicone Carbide 24 grit grip strips for use with the abrasive file.
SMFEMA Finiteasy Cibo’s hand-held fillet weld grinding machine, essential for completing this process.
Please take a look at our short video below to see brief clips of the above steps.