Clarification and CNC Instructions for RowCruiser DXF Files

• TF

  Todd Forney

  1/21/25, 5:05 AM

   I’m reaching out regarding the CNC DXF files we received, as I’m encountering some challenges with my Thai CNC shop. They’re having trouble grasping what needs to be cut out from the DXF files, and I wanted to clarify a few points to provide them with clearer instructions.

  Materials and Manual Discrepancy

  We purchased 8 sheets of 6mm BS1088 Okoume plywood, as discussed earlier, because sourcing 4mm in Thailand has proven difficult. This aligns with what the manual states:

  • 2 sheets of Okoume 4mm plywood (manufactured to BS 1088 standards).

  However, the CNC DXF files indicate the following:

  • 5 sheets of 4mm (4-1 through 4-5).
  • 2 sheets of 6mm (6-1 and 6-2) (6-2 appears to service two boats).
  • B-1: 1 sheet of 1/4-inch plywood (6mm equivalent).
  • B-2: 2 sheets of 1/2-inch plywood (12mm equivalent).

  This differs from what the manual specifies, which lists 2 sheets of 4mm and 6 sheets of 6mm.

  Glass Cloth Availability

  In addition, we were only able to source 20 yards of 39”-wide glass cloth (6 oz density) instead of the width specified in the manual. Could you clarify how this will affect the build and if adjustments need to be made to ensure proper fiberglass coverage?

  Questions and Request for Clarification

  1. Are there specific instructions for a CNC shop to follow regarding these files?
  2. Could you provide more detail or guidance to clarify:
     • The role of the 4mm sheets listed in the DXF files (since we’re substituting with 6mm).
     • How parts from B-1 (1/4-inch) and B-2 (1/2-inch) fit into the overall cutting plan.

   

  Any additional detail or cutting guidance for my CNC shop would be greatly appreciated! Thank you in advance for your help, and please let me know if you need more information from me.

  Best regards,
  
  

   

   
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• CA

  Colin Angus

  1/21/25, 4:00 PM
  That's great to hear things are moving forward.  If you're CNC cutting the wood, please don't refer to the plans manual as the wood requirements are different along with some of the construction techniques.  Instead, refer to the manual labelled "kit manual".  With regards to the wood requirements - the CNC files have the wood thickness labelled on the sheets (4mm or 6 mm).  Please use this as a guide for the thickness of wood and the number of sheets required.

   

  If you only have access to 6mm plywood, that is fine.  In fact, we used to recommend using 6mm plywood for the hull before thinning it down to 4mm.  Simply use 6mm wood for the hull panels instead of the 4mm.

   

  These files are the ones we use for selling our kits, so please don't cut the files that have big rectangles on half inch sheets that are merely the shipping crate - unless you want to transport the pieces after.

   

  The sections labelled as "pocketed" are cut to half depth.  It is useful for assembly to scribe the labels on the pieces.  This is easiest done prior to cutting the pieces out using a 1 mm bit with a depth of about half a mm.

   

  The fiberglass you have will work fine.  Since it won't fully cover the hull, you can overlap it a few inches in the middle.  The overlap will provide additional reinforcing here, and the edges can be feathered after applciation.

   

  I hope that helps, and let me know if you have any additional questions.

   
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